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Is there life on other planets? On this episode of StarTalk, Neil deGrasse Tyson and co-host Matt Kirshen dig into the search for extraterrestrial life with exoplanet expert and author of the memoir, “Smallest Lights in the Universe,” astrophysicist Sara Seager. Originally Aired March 15, 2021NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/cosmic-queries-life-on-exoplanets-with-sara-seager/ Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.
SpaceTime with Stuart Gary | Astronomy, Space & Science News
SpaceTime Series 28 Episode 21The Astronomy, Space and Science News PodcastShifting Dynamics of Earth's Inner Core, China's Lunar South Pole Mission, and Insights into Hot Jupiter ExoplanetsIn this episode of SpaceTime, we explore groundbreaking research revealing that Earth's inner core may be less solid than previously believed. A new study indicates that the near surface of the inner core is undergoing structural transformations, influenced by interactions with the turbulent outer core. This discovery provides fresh insights into the dynamics of Earth's core and its impact on the planet's magnetic field and rotation.China's Chang'e 7 Mission: A Quest for Lunar Water IceWe also discuss China's upcoming Chang'e 7 mission, set to launch next year, which aims to search for water ice at the lunar south pole. This mission will employ advanced technologies to locate and analyze water ice deposits, crucial for supporting future manned missions to the Moon and beyond. The Chang'e 7 mission will include an orbiter, lander, rover, and a mobile hopper designed for traversing shadowed craters.Hot Jupiter Progenitor: New Discoveries in Exoplanet ResearchAdditionally, we delve into the fascinating discovery of a hot Jupiter exoplanet with an eccentric orbit, shedding light on the formation processes of these gas giants. The research indicates that this planet has likely been influenced by a binary star system, providing new evidence for the mechanisms behind hot Jupiter migration and evolution.00:00 Space Time Series 28 Episode 21 for broadcast on 17 February 202500:49 New findings on Earth's inner core06:30 Overview of China's Chang'e 7 mission12:15 Insights from the discovery of a hot Jupiter exoplanet18:00 Implications for planetary formation theories22:45 The significance of lunar water ice for future missions27:00 Understanding the dynamics of celestial bodies30:15 The impact of climate change on global temperatureswww.spacetimewithstuartgary.comwww.bitesz.com
Ontario based entertainers Cassie Noble and Warren Frank got to know each other on the road! They became fast friends and now cherish similar qualities like taking time in nature, thoughtful conversation and knowing how their styles complement each other in the house concert environment (that is, Gamekeeper balances out Cassie's classic sad songs!). We talk about the writing process, Cassie's influences and the brilliant concept behind her music videos. The role of a show-opener is a unique specialty and one that we've not truly explored until today's episode! Us on the web: www.mikeandkristen.ca Instagram: www.instagram.com/mike_and_kristen/ Facebook: https://www.facebook.com/mikeandkristencreative Shoot us a message! Say hello, tell us who you think we should have on the podcast, and your deepest and darkest secrets: mikeandkristencreative@gmail.com Review our book "You and Me" on Amazon (it helps a lot!!): https://amzn.to/3qqNCMo Intro song: "The Walk" Outro song: "The Jam" both by Mike's band The Town Heroes - www.thetownheroes.com Mike's site: www.michaelsryan.com Kristen's site: www.kristenherringtonart.com Cassie Noble's website: https://cassienoble.bandcamp.com/album/nowhere-to-go-but-everywhere Cassie Noble's IG: https://www.instagram.com/cassienoblemusic/ Gamekeeper's IG: https://www.instagram.com/gamekeepertunes/
Elliott BROOD is a three-piece Canadian alternative country band featuring Mark Sasso (lead vocals, guitar, banjo, ukulele, harmonica), Casey Laforet (guitar, lead vocals, backing vocals, bass pedals, keys, ukulele), and Stephen Pitkin (percussion, sampler, backing vocals). Known for embracing a “van life” tour style, the band thrives on exploring global venues and connecting with diverse audiences. Growing up in Windsor, Ontario the band has dazzled us with their talents and storytelling having shared stages with the likes of Wilco, War On Drugs, The Head and the Heart, Blue Rodeo, The Black Crowes, Corb Lund and The Sadies. Their latest albums “Town” and “Country” capture themes of nostalgia and celebration of where they are in their lives today. In this episode, we go behind the scenes of the music industry, discussing the importance of authentic storytelling through lyrics and why perfection isn't the goal. Fresh off an East Coast tour, Mark and Casey reflect on the influence of Gord Downie, the unique journey of being a Canadian band, and how trust and friendship have fueled their longevity. We exchange presents, pleasantries and pumpkin truffles with these new friends! Plus, stick around for a special treat—Mark and Casey perform live just for us! Us on the web: www.mikeandkristen.ca Instagram: www.instagram.com/mike_and_kristen/ Facebook: https://www.facebook.com/mikeandkristencreative Shoot us a message! Say hello, tell us who you think we should have on the podcast, and your deepest and darkest secrets: mikeandkristencreative@gmail.com Review our book "You and Me" on Amazon (it helps a lot!!): https://amzn.to/3qqNCMo Intro song: "The Walk" Outro song: "The Jam" both by Mike's band The Town Heroes - www.thetownheroes.com Mike's site: www.michaelsryan.com Kristen's site: www.kristenherringtonart.com Elliott BROOD's website: https://www.elliottbrood.com/ Elliott BROODs IG: https://www.instagram.com/elliottbrood/
The 365 Days of Astronomy, the daily podcast of the International Year of Astronomy 2009
From Sept 22, 2006. You have lived on the Earth all your life, so you'd think you know plenty about planets. As usual though, the Universe is stranger than we assume, and the planets orbiting other stars defy our expectations. Gigantic super-Jupiters whirling around their parent stars every couple of days; fluffy planets with the density of cork; and Earth-sized fragments of exploded stars circling pulsars. Join us as we round up the latest batch of bizarro worlds. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too! Every bit helps! Thank you! ------------------------------------ Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations. Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.
Could we find life around low-mass stars? Neil deGrasse Tyson and comedian Chuck Nice find out why life might be more likely around low-mass stars, what makes brown dwarfs, galactic archeology, and more with astronomer Emily Rice.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/low-mass-mania-with-emily-rice/Thanks to our Patrons Anthony Garcia, Matthew Carlson, mike kelly, Brett DiFrischia, Mary Clare V., Peter Ilvento, A dinosaur in dental school, Cedric Rashade Collins, 1874 Homestead, and Bob for supporting us this week.
The Jak Kelly Award is awarded to encourage excellence in postgraduate physics research. It's given annually in honour of Professor Jak Kelly - the Head of Physics at University of NSW from 1985 to 1989. In 2023, the winner was Dr Jaime Andrés Alvarado-Montes from Macquarie University, who studies planets.He specialises in Hot Jupiters (featured in a recent Science Show).But, unlike our own Jupiter, he has found several so close to their sun that they are torn apart. Could this have been the history of our planet Earth? We also hear from several winners of scholarships presented by the Royal Society of NSW:For better treatment of bowel cancer;Chemical analysis of human cells;Tracking of PFAS - the anti-fire measure; and,A way the scientist claims is 99 per cent effective for identifying fake newsTalent:Dr Jaime Andrés Alvarado-Montes, Macquarie UniversityJayden Mckinnon, University of WollongongDr Jacinta Martin, University of NewcastleDr Abhimanu Pandey, Australian National UniversityShoujin Wang, UTS
Dakotah Tyler describes how hot Jupiters form and the process where some lose their gas.
Our dear friend, the legendary Nancy Regan has taken over the mic to host this week's episode of Mike and Kristen! She takes us down memory lane asking how we met, what we love about each other, and how we've managed to maintain both collaboration and connection after 13 years of being a couple. We reveal one of our closest secrets – Mexican Superbowl – as one of our key ingredients to longevity. A behind the curtain glimpse at our lives, with the brilliance of Nancy's guidance. Let's GO for year three everyone! Us on the web: www.mikeandkristen.ca Instagram: www.instagram.com/mike_and_kristen/ Facebook: https://www.facebook.com/mikeandkristencreative Shoot us a message! Say hello, tell us who you think we should have on the podcast, and your deepest and darkest secrets: mikeandkristencreative@gmail.com Review our book "You and Me" on Amazon (it helps a lot!!): https://amzn.to/3qqNCMo Intro song: "The Walk" Outro song: "The Jam" both by Mike's band The Town Heroes - www.thetownheroes.com Mike's site: www.michaelsryan.com Kristen's site: www.kristenherringtonart.com M & K Fundraiser: https://mikeandkristen.ca/fundraiser Nancy's Website: https://www.nancyregan.ca Nancy's Instagram: https://www.instagram.com/novascotianancy/
Recently astronomers made an unexpected discovery. They found a planet called WASP-69b with a giant comet-like gas tail that was bigger than ever. What's causing such behaviour and what can we learn about hot Jupiters? Finding out with Dakota Tyler from the University of LA.
Recently astronomers made an unexpected discovery. They found a planet called WASP-69b with a giant comet-like gas tail that was bigger than ever. What's causing such behaviour and what can we learn about hot Jupiters? Finding out with Dakota Tyler from the University of LA.
Join hosts Kylo Ri, DJ Lloyd Willin', Deuce Touché, and David Roughin as they discuss Simone Biles and Jonathan Owens' "Catch" Controversy, TD Jakes Link to Diddy Parties, Downtown Indianapolis Development Makeover, New Bas, New Wizkid, New Big Krit, #RaisingKanan Episode Recap, Rap Sh*t Season Finale, Kylo Ri's "Raise Your Hand", Giannis VS the Indiana Pacers, and much more! #Blessthebottle Season 7 Episode 41 Features an Exclusive Interview with Indy's own Astrophysicist, Dakotah Tyler. Tune in as @dtstarkid details his passion for Astronomy, space exploration, space communication, debunking the flat earth theory, his perspective on the possibility of life in other galaxies, and much more! For all things PreGame Podcast visit www.livefromthepregame.com For.exclusive content and experiences check out the PreGame Podcast on patreon.com/thepregamepodcast Secure your business loan today www.bankable.org
Join host Tim Gibbs and his AI Newsreader sidekick, Hallie, for an enlightening episode of the Astronomy Daily Podcast. In today's show, we uncover the wonders of the night sky with the opening of a new dark sky discovery hub at Somerset's Wimbled Lake. Nestled within Europe's first International Dark Sky Reserve, this hub promises an immersive stargazing experience, complete with low seating and a telescope-friendly patio platform. Celebrate the magic of the cosmos with us, as we delve into the hub's debut during the Exmoor Dark Skies Festival.**Highlights of this episode include:**- **The New Dark Sky Discovery Hub:** Discover the latest addition to Somerset's stargazing landscape, offering a serene view over Wimbled Lake and the starry expanse above.- **Astrophotography and Wildlife:** Learn about the hub's dual purpose as a haven for astrophotography enthusiasts and nocturnal wildlife education.- **Exmoor's Dark Sky Delights:** Explore the Exmoor National Park Authority's efforts to enhance dark sky appreciation through unique hubs and the annual Dark Skies Festival.- **Cosmic Revelations with NASA:** Hallie brings us the latest astronomical insights from NASA's James Webb Space Telescope, revealing distant galaxies and the universe's early days.- **Euclid Space Telescope's First Images:** Anticipate the European Space Agency's unveiling of the Euclid Space Telescope's first full-color images, set to expand our understanding of dark matter and dark energy.- **Miss England's Astronaut Training:** Hear about Jessica Goggen's experience with Boeing's Starliner Simulator, and what this means for future space missions.- **NASA's Challenges Ahead:** A look into NASA's Office of the Inspector General's annual report, highlighting the trials and triumphs of space exploration.- **Hot Jupiter's and Star Age:** Discover the intriguing link between the age of stars and the presence of hot Jupiter exoplanets.**Join the Conversation:**Don't miss out on the ongoing space dialogue. Connect with fellow astronomy enthusiasts on our Facebook page, Space Nuts podcast group.**Tune In:**Catch all past, current, and future episodes on [spaceduts.io](https://example.com) and [bytes.com](https://example.com). With special segments from Steve in New South Wales and Tim Gibbs in Somerset, the Astronomy Daily Podcast is your gateway to the stars.---This show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5648921/advertisement
“Hot Jupiters” aren't very friendly. Few of the giant planets have nearby companion planets. That could mean that the hot Jupiters have kicked other planets away. Hot Jupiters were the first planets discovered in other star systems. They're big, heavy balls of gas, like Jupiter, the giant of our own solar system. But while Jupiter is far from the Sun, hot Jupiters are quite close in, so they're heated to hundreds or thousands of degrees. Such planets can't form that close to a star — it's just too hot. They must have been born farther out, then moved inward. The question is whether that's a gentle process, allowing the Jupiter to co-exist with other planets, or a more violent one that boots the other planets out of its way. And so far, the “violent” scenario has been the most likely, because astronomers have found few close companion planets. But in a recent study, about one in eight hot Jupiters did have a nearby companion. Those Jupiter-like worlds must have migrated inward in the gentler process, sparing their sibling worlds. And warm Jupiters — those that are a little farther out — were more hospitable: about two-thirds had close companions. So there may be more than one way for a Jupiter to fall toward its parent star. Our own Jupiter teams up with the Moon the next few nights. It looks like a brilliant star. It's well to the lower left of the Moon tonight, but will huddle much closer tomorrow night. Script by Damond Benningfield Support McDonald Observatory
WASP-39 b is a hot and puffy planet with a mass roughly one-quarter that of Jupiter and a diameter 1.3 times greater than Jupiter Show Notes Available at https://exoplanetradio.com/exoplanets/wasp39b-hot-jupiter/.
JWST Looks at the Next Planet in the TRAPPIST system. Could we detect colliding supermassive black holes. Hot Jupiters that flew too close to their stars.
JWST Looks at the Next Planet in the TRAPPIST system. Could we detect colliding supermassive black holes. Hot Jupiters that flew too close to their stars.
What is the weirdest planet ever discovered? Neil deGrasse Tyson and comedian Chuck Nice discover bizarre exoplanets like Erebus, the impacts of living on a habitable moon, hot Jupiters, and more with astronomy professor David Kipping.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/cosmic-queries-cool-worlds-with-david-kipping/Thanks to our Patrons La Katrrina, rpmckee, Arvinder Singh, David Brown, Mason, and Jesse Wolff for supporting us this week.Photo Credit: David A. Aguilar (CfA), CC BY-SA 3.0, via Wikimedia Commons
Making hot Jupiters in stellar clusters: the importance of binary exchange by Daohai Li et al. on Wednesday 30 November It has been suggested that the occurrence rate of hot Jupiters (HJs) in open clusters might reach several per cent, significantly higher than that of the field ($sim$ a per cent). In a stellar cluster, when a planetary system scatters with a stellar binary, it may acquire a companion star which may excite large amplitude von Zeipel-Lidov-Kozai oscillations in the planet's orbital eccentricity, triggering high-eccentricity migration and the formation of an HJ. We quantify the efficiency of this mechanism by modelling the evolution of a gas giant around a solar mass star under the influence of successive scatterings with binary and single stars. We show that the chance that a planet $in(1,10)$ au becomes an HJ in a Gyr in a cluster of stellar density $n_*=50$ pc$^{-3}$ and binary fraction $f_mathrm{bin}=0.5$ is about 2% and an additional 4% are forced by the companion star into collision with or tidal disruption by the central host. An empirical fit shows that the total percentage of those outcomes asymptotically reaches an upper limit determined solely by $f_mathrm{bin}$ (e.g., $10%$ at $f_mathrm{bin}=0.3$ and 18% at $f_mathrm{bin}=1$) on a timescale inversely proportional to $n_*$ ($sim$ Gyr for $n_*sim100$ pc$^{-3}$). The ratio of collisions to tidal disruptions is roughly a few, and depends on the tidal model. Therefore, if the giant planet occurrence rate is 10~%, our mechanism implies an HJ occurrence rate of a few times 0.1~% in a Gyr and can thus explain a substantial fraction of the observed rate. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16015v1
Making hot Jupiters in stellar clusters: the importance of binary exchange by Daohai Li et al. on Wednesday 30 November It has been suggested that the occurrence rate of hot Jupiters (HJs) in open clusters might reach several per cent, significantly higher than that of the field ($sim$ a per cent). In a stellar cluster, when a planetary system scatters with a stellar binary, it may acquire a companion star which may excite large amplitude von Zeipel-Lidov-Kozai oscillations in the planet's orbital eccentricity, triggering high-eccentricity migration and the formation of an HJ. We quantify the efficiency of this mechanism by modelling the evolution of a gas giant around a solar mass star under the influence of successive scatterings with binary and single stars. We show that the chance that a planet $in(1,10)$ au becomes an HJ in a Gyr in a cluster of stellar density $n_*=50$ pc$^{-3}$ and binary fraction $f_mathrm{bin}=0.5$ is about 2% and an additional 4% are forced by the companion star into collision with or tidal disruption by the central host. An empirical fit shows that the total percentage of those outcomes asymptotically reaches an upper limit determined solely by $f_mathrm{bin}$ (e.g., $10%$ at $f_mathrm{bin}=0.3$ and 18% at $f_mathrm{bin}=1$) on a timescale inversely proportional to $n_*$ ($sim$ Gyr for $n_*sim100$ pc$^{-3}$). The ratio of collisions to tidal disruptions is roughly a few, and depends on the tidal model. Therefore, if the giant planet occurrence rate is 10~%, our mechanism implies an HJ occurrence rate of a few times 0.1~% in a Gyr and can thus explain a substantial fraction of the observed rate. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16015v1
Making hot Jupiters in stellar clusters: the importance of binary exchange by Daohai Li et al. on Tuesday 29 November It has been suggested that the occurrence rate of hot Jupiters (HJs) in open clusters might reach several per cent, significantly higher than that of the field ($sim$ a per cent). In a stellar cluster, when a planetary system scatters with a stellar binary, it may acquire a companion star which may excite large amplitude von Zeipel-Lidov-Kozai oscillations in the planet's orbital eccentricity, triggering high-eccentricity migration and the formation of an HJ. We quantify the efficiency of this mechanism by modelling the evolution of a gas giant around a solar mass star under the influence of successive scatterings with binary and single stars. We show that the chance that a planet $in(1,10)$ au becomes an HJ in a Gyr in a cluster of stellar density $n_*=50$ pc$^{-3}$ and binary fraction $f_mathrm{bin}=0.5$ is about 2% and an additional 4% are forced by the companion star into collision with or tidal disruption by the central host. An empirical fit shows that the total percentage of those outcomes asymptotically reaches an upper limit determined solely by $f_mathrm{bin}$ (e.g., $10%$ at $f_mathrm{bin}=0.3$ and 18% at $f_mathrm{bin}=1$) on a timescale inversely proportional to $n_*$ ($sim$ Gyr for $n_*sim100$ pc$^{-3}$). The ratio of collisions to tidal disruptions is roughly a few, and depends on the tidal model. Therefore, if the giant planet occurrence rate is 10~%, our mechanism implies an HJ occurrence rate of a few times 0.1~% in a Gyr and can thus explain a substantial fraction of the observed rate. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16015v1
Making hot Jupiters in stellar clusters: the importance of binary exchange by Daohai Li et al. on Tuesday 29 November It has been suggested that the occurrence rate of hot Jupiters (HJs) in open clusters might reach several per cent, significantly higher than that of the field ($sim$ a per cent). In a stellar cluster, when a planetary system scatters with a stellar binary, it may acquire a companion star which may excite large amplitude von Zeipel-Lidov-Kozai oscillations in the planet's orbital eccentricity, triggering high-eccentricity migration and the formation of an HJ. We quantify the efficiency of this mechanism by modelling the evolution of a gas giant around a solar mass star under the influence of successive scatterings with binary and single stars. We show that the chance that a planet $in(1,10)$ au becomes an HJ in a Gyr in a cluster of stellar density $n_*=50$ pc$^{-3}$ and binary fraction $f_mathrm{bin}=0.5$ is about 2% and an additional 4% are forced by the companion star into collision with or tidal disruption by the central host. An empirical fit shows that the total percentage of those outcomes asymptotically reaches an upper limit determined solely by $f_mathrm{bin}$ (e.g., $10%$ at $f_mathrm{bin}=0.3$ and 18% at $f_mathrm{bin}=1$) on a timescale inversely proportional to $n_*$ ($sim$ Gyr for $n_*sim100$ pc$^{-3}$). The ratio of collisions to tidal disruptions is roughly a few, and depends on the tidal model. Therefore, if the giant planet occurrence rate is 10~%, our mechanism implies an HJ occurrence rate of a few times 0.1~% in a Gyr and can thus explain a substantial fraction of the observed rate. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16015v1
A strong H- opacity signal in the near-infrared emission spectrum of the ultra-hot Jupiter KELT-9b by Bob Jacobs et al. on Tuesday 22 November We present the analysis of a spectroscopic secondary eclipse of the hottest transiting exoplanet detected to date, KELT-9b, obtained with the Wide Field Camera 3 aboard the Hubble Space Telescope. We complement these data with literature information on stellar pulsations and Spitzer/Infrared Array Camera and Transiting Exoplanet Survey Satellite eclipse depths of this target to obtain a broadband thermal emission spectrum. Our extracted spectrum exhibits a clear turnoff at 1.4$mu$m. This points to H$^{-}$ bound-free opacities shaping the spectrum. To interpret the spectrum, we perform grid retrievals of self-consistent 1D equilibrium chemistry forward models, varying the composition and energy budget. The model with solar metallicity and C/O ratio provides a poor fit because the H$^{-}$ signal is stronger than expected, requiring an excess of electrons. This pushes our retrievals toward high atmospheric metallicities ($[M/H]=1.98^{+0.19}_{-0.21}$) and a C/O ratio that is subsolar by 2.4$sigma$. We question the viability of forming such a high-metallicity planet, and therefore provide other scenarios to increase the electron density in this atmosphere. We also look at an alternative model in which we quench TiO and VO. This fit results in an atmosphere with a slightly subsolar metallicity and subsolar C/O ratio ($[M/H]=-0.22^{+0.17}_{-0.13}$, log(C/O)$=-0.34^{+0.19}_{-0.34}$). However, the required TiO abundances are disputed by recent high-resolution measurements of the same planet. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10297v1
A strong H- opacity signal in the near-infrared emission spectrum of the ultra-hot Jupiter KELT-9b by Bob Jacobs et al. on Tuesday 22 November We present the analysis of a spectroscopic secondary eclipse of the hottest transiting exoplanet detected to date, KELT-9b, obtained with the Wide Field Camera 3 aboard the Hubble Space Telescope. We complement these data with literature information on stellar pulsations and Spitzer/Infrared Array Camera and Transiting Exoplanet Survey Satellite eclipse depths of this target to obtain a broadband thermal emission spectrum. Our extracted spectrum exhibits a clear turnoff at 1.4$mu$m. This points to H$^{-}$ bound-free opacities shaping the spectrum. To interpret the spectrum, we perform grid retrievals of self-consistent 1D equilibrium chemistry forward models, varying the composition and energy budget. The model with solar metallicity and C/O ratio provides a poor fit because the H$^{-}$ signal is stronger than expected, requiring an excess of electrons. This pushes our retrievals toward high atmospheric metallicities ($[M/H]=1.98^{+0.19}_{-0.21}$) and a C/O ratio that is subsolar by 2.4$sigma$. We question the viability of forming such a high-metallicity planet, and therefore provide other scenarios to increase the electron density in this atmosphere. We also look at an alternative model in which we quench TiO and VO. This fit results in an atmosphere with a slightly subsolar metallicity and subsolar C/O ratio ($[M/H]=-0.22^{+0.17}_{-0.13}$, log(C/O)$=-0.34^{+0.19}_{-0.34}$). However, the required TiO abundances are disputed by recent high-resolution measurements of the same planet. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10297v1
A strong H- opacity signal in the near-infrared emission spectrum of the ultra-hot Jupiter KELT-9b by Bob Jacobs et al. on Monday 21 November We present the analysis of a spectroscopic secondary eclipse of the hottest transiting exoplanet detected to date, KELT-9b, obtained with the Wide Field Camera 3 aboard the Hubble Space Telescope. We complement these data with literature information on stellar pulsations and Spitzer/Infrared Array Camera and Transiting Exoplanet Survey Satellite eclipse depths of this target to obtain a broadband thermal emission spectrum. Our extracted spectrum exhibits a clear turnoff at 1.4$mu$m. This points to H$^{-}$ bound-free opacities shaping the spectrum. To interpret the spectrum, we perform grid retrievals of self-consistent 1D equilibrium chemistry forward models, varying the composition and energy budget. The model with solar metallicity and C/O ratio provides a poor fit because the H$^{-}$ signal is stronger than expected, requiring an excess of electrons. This pushes our retrievals toward high atmospheric metallicities ($[M/H]=1.98^{+0.19}_{-0.21}$) and a C/O ratio that is subsolar by 2.4$sigma$. We question the viability of forming such a high-metallicity planet, and therefore provide other scenarios to increase the electron density in this atmosphere. We also look at an alternative model in which we quench TiO and VO. This fit results in an atmosphere with a slightly subsolar metallicity and subsolar C/O ratio ($[M/H]=-0.22^{+0.17}_{-0.13}$, log(C/O)$=-0.34^{+0.19}_{-0.34}$). However, the required TiO abundances are disputed by recent high-resolution measurements of the same planet. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10297v1
A strong H- opacity signal in the near-infrared emission spectrum of the ultra-hot Jupiter KELT-9b by Bob Jacobs et al. on Monday 21 November We present the analysis of a spectroscopic secondary eclipse of the hottest transiting exoplanet detected to date, KELT-9b, obtained with the Wide Field Camera 3 aboard the Hubble Space Telescope. We complement these data with literature information on stellar pulsations and Spitzer/Infrared Array Camera and Transiting Exoplanet Survey Satellite eclipse depths of this target to obtain a broadband thermal emission spectrum. Our extracted spectrum exhibits a clear turnoff at 1.4$mu$m. This points to H$^{-}$ bound-free opacities shaping the spectrum. To interpret the spectrum, we perform grid retrievals of self-consistent 1D equilibrium chemistry forward models, varying the composition and energy budget. The model with solar metallicity and C/O ratio provides a poor fit because the H$^{-}$ signal is stronger than expected, requiring an excess of electrons. This pushes our retrievals toward high atmospheric metallicities ($[M/H]=1.98^{+0.19}_{-0.21}$) and a C/O ratio that is subsolar by 2.4$sigma$. We question the viability of forming such a high-metallicity planet, and therefore provide other scenarios to increase the electron density in this atmosphere. We also look at an alternative model in which we quench TiO and VO. This fit results in an atmosphere with a slightly subsolar metallicity and subsolar C/O ratio ($[M/H]=-0.22^{+0.17}_{-0.13}$, log(C/O)$=-0.34^{+0.19}_{-0.34}$). However, the required TiO abundances are disputed by recent high-resolution measurements of the same planet. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10297v1
A strong H- opacity signal in the near-infrared emission spectrum of the ultra-hot Jupiter KELT-9b by Bob Jacobs et al. on Monday 21 November We present the analysis of a spectroscopic secondary eclipse of the hottest transiting exoplanet detected to date, KELT-9b, obtained with the Wide Field Camera 3 aboard the Hubble Space Telescope. We complement these data with literature information on stellar pulsations and Spitzer/Infrared Array Camera and Transiting Exoplanet Survey Satellite eclipse depths of this target to obtain a broadband thermal emission spectrum. Our extracted spectrum exhibits a clear turnoff at 1.4$mu$m. This points to H$^{-}$ bound-free opacities shaping the spectrum. To interpret the spectrum, we perform grid retrievals of self-consistent 1D equilibrium chemistry forward models, varying the composition and energy budget. The model with solar metallicity and C/O ratio provides a poor fit because the H$^{-}$ signal is stronger than expected, requiring an excess of electrons. This pushes our retrievals toward high atmospheric metallicities ($[M/H]=1.98^{+0.19}_{-0.21}$) and a C/O ratio that is subsolar by 2.4$sigma$. We question the viability of forming such a high-metallicity planet, and therefore provide other scenarios to increase the electron density in this atmosphere. We also look at an alternative model in which we quench TiO and VO. This fit results in an atmosphere with a slightly subsolar metallicity and subsolar C/O ratio ($[M/H]=-0.22^{+0.17}_{-0.13}$, log(C/O)$=-0.34^{+0.19}_{-0.34}$). However, the required TiO abundances are disputed by recent high-resolution measurements of the same planet. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10297v1
A strong H- opacity signal in the near-infrared emission spectrum of the ultra-hot Jupiter KELT-9b by Bob Jacobs et al. on Monday 21 November We present the analysis of a spectroscopic secondary eclipse of the hottest transiting exoplanet detected to date, KELT-9b, obtained with the Wide Field Camera 3 aboard the Hubble Space Telescope. We complement these data with literature information on stellar pulsations and Spitzer/Infrared Array Camera and Transiting Exoplanet Survey Satellite eclipse depths of this target to obtain a broadband thermal emission spectrum. Our extracted spectrum exhibits a clear turnoff at 1.4$mu$m. This points to H$^{-}$ bound-free opacities shaping the spectrum. To interpret the spectrum, we perform grid retrievals of self-consistent 1D equilibrium chemistry forward models, varying the composition and energy budget. The model with solar metallicity and C/O ratio provides a poor fit because the H$^{-}$ signal is stronger than expected, requiring an excess of electrons. This pushes our retrievals toward high atmospheric metallicities ($[M/H]=1.98^{+0.19}_{-0.21}$) and a C/O ratio that is subsolar by 2.4$sigma$. We question the viability of forming such a high-metallicity planet, and therefore provide other scenarios to increase the electron density in this atmosphere. We also look at an alternative model in which we quench TiO and VO. This fit results in an atmosphere with a slightly subsolar metallicity and subsolar C/O ratio ($[M/H]=-0.22^{+0.17}_{-0.13}$, log(C/O)$=-0.34^{+0.19}_{-0.34}$). However, the required TiO abundances are disputed by recent high-resolution measurements of the same planet. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10297v1
Planets can force their host stars to act younger than their age, according to a new study of multiple systems using NASA's Chandra X-ray Observatory.
With Dr. Natalie Batalha (NASA, Kepler Mission Project Scientist)NASA's Kepler Mission launched in 2009 with the objective of finding "Goldilocks planets" orbiting other stars like our Sun -- those that are not too hot, not too cold, but just right. The space telescope opened our eyes to the many terrestrial-sized planets that populate the galaxy (including several right in our neighborhood,) as well as to exotic worlds unlike anything that exists in the solar system. Dr. Batalha gives an overview of the science legacy of the Kepler Mission and other key planet discoveries (including some results that were then only a few weeks old). She also gives a preview of planet-finding missions to come. Recorded Nov. 8, 2017
Occurrence rate of hot Jupiters around early-type M dwarfs based on TESS data by Tianjun Gan et al. on Monday 17 October We present an estimate of the occurrence rate of hot Jupiters ($7 R_{oplus}leq R_{p}leq 2 R_{J}$, $0.8 leq P_{b}leq 10$ days) around early-type M dwarfs based on stars observed by TESS during its Primary Mission. We adopt stellar parameters from the TESS Input Catalog, and construct a sample of 60,819 M dwarfs with $10.5 leq T_{rm mag}leq 13.5$, effective temperature $2900 leq T_{rm eff}leq 4000 K$ and stellar mass $0.45leq M_{ast}leq 0.65 M_{odot}$. We conduct a uninformed transit search using a detection pipeline based on the box least square search and characterize the searching completeness through an injection and recovery experiment. We combine a series of vetting steps including light centroid measurement, odd/even and secondary eclipse analysis, rotation and transit period synchronization tests as well as inspecting the ground-based photometric, spectroscopic and imaging observations. Finally, we find a total of nine planet candidates, all of which are known TESS objects of interest. We obtain an occurrence rate of $0.27pm0.09%$ for hot Jupiters around early-type M dwarfs that satisfy our selection criteria. Compared with previous studies, the occurrence rate of hot Jupiters around early-type M dwarfs is smaller than all measurements for FGK stars, although they are consistent within 1--2$sigma$. Combining results from transit, radial velocity and microlensing surveys, we find that hot Jupiters around early-type M dwarfs possibly show a steeper decrease in occurrence rate per logarithmic semi-major axis bin (${{rm d}N}/{rm d}log_{10} a$) when compared with FGK stars. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.08313v1
Atmospheric heat redistribution effect on Emission spectra of Hot-Jupiters by Soumya Sengupta et al. on Monday 17 October Hot Jupiters are the most studied and easily detectable exoplanets for transit observations.However, the correlation between the atmospheric flow and the emission spectra of such planets is still not understood. Due to huge day-night temperature contrast in hot Jupiter, the thermal redistribution through atmospheric circulation has a significant impact on the vertical temperature-pressure structure and on the emission spectra. In the present work, we aim to study the variation of the temperature-pressure profiles and the emission spectra of such planets due to different amounts of atmospheric heat redistribution. For this purpose, we first derive an analytical relation between the heat redistribution parameter f and the emitted flux from the uppermost atmospheric layers of hot Jupiter. We adopt the three possible values of f under isotropic approximation as 1/4, 1/2, and 2/3 for full-redistribution, semi-redistribution and no-redistribution cases respectively and calculate the corresponding temperature-pressure profiles and the emission spectra. Next, we model the emission spectra for different values of f by numerically solving the radiative transfer equations using the discrete space theory formalism. We demonstrate that the atmospheric temperature-pressure profiles and the emission spectra both are susceptible to the values of the heat redistribution function. A reduction in the heat redistribution yields a thermal inversion in the temperature-pressure profiles and hence increases the amount of emission flux. Finally, we revisits the hot Jupiter XO-1b temperature-pressure profile degeneracy case and show that a non-inversion temperature-pressure profile best explains this observed planetary dayside emission spectra. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.08755v1
Occurrence rate of hot Jupiters around early-type M dwarfs based on TESS data by Tianjun Gan et al. on Monday 17 October We present an estimate of the occurrence rate of hot Jupiters ($7 R_{oplus}leq R_{p}leq 2 R_{J}$, $0.8 leq P_{b}leq 10$ days) around early-type M dwarfs based on stars observed by TESS during its Primary Mission. We adopt stellar parameters from the TESS Input Catalog, and construct a sample of 60,819 M dwarfs with $10.5 leq T_{rm mag}leq 13.5$, effective temperature $2900 leq T_{rm eff}leq 4000 K$ and stellar mass $0.45leq M_{ast}leq 0.65 M_{odot}$. We conduct a uninformed transit search using a detection pipeline based on the box least square search and characterize the searching completeness through an injection and recovery experiment. We combine a series of vetting steps including light centroid measurement, odd/even and secondary eclipse analysis, rotation and transit period synchronization tests as well as inspecting the ground-based photometric, spectroscopic and imaging observations. Finally, we find a total of nine planet candidates, all of which are known TESS objects of interest. We obtain an occurrence rate of $0.27pm0.09%$ for hot Jupiters around early-type M dwarfs that satisfy our selection criteria. Compared with previous studies, the occurrence rate of hot Jupiters around early-type M dwarfs is smaller than all measurements for FGK stars, although they are consistent within 1--2$sigma$. Combining results from transit, radial velocity and microlensing surveys, we find that hot Jupiters around early-type M dwarfs possibly show a steeper decrease in occurrence rate per logarithmic semi-major axis bin (${{rm d}N}/{rm d}log_{10} a$) when compared with FGK stars. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.08313v1
Atmospheric heat redistribution effect on Emission spectra of Hot-Jupiters by Soumya Sengupta et al. on Monday 17 October Hot Jupiters are the most studied and easily detectable exoplanets for transit observations.However, the correlation between the atmospheric flow and the emission spectra of such planets is still not understood. Due to huge day-night temperature contrast in hot Jupiter, the thermal redistribution through atmospheric circulation has a significant impact on the vertical temperature-pressure structure and on the emission spectra. In the present work, we aim to study the variation of the temperature-pressure profiles and the emission spectra of such planets due to different amounts of atmospheric heat redistribution. For this purpose, we first derive an analytical relation between the heat redistribution parameter f and the emitted flux from the uppermost atmospheric layers of hot Jupiter. We adopt the three possible values of f under isotropic approximation as 1/4, 1/2, and 2/3 for full-redistribution, semi-redistribution and no-redistribution cases respectively and calculate the corresponding temperature-pressure profiles and the emission spectra. Next, we model the emission spectra for different values of f by numerically solving the radiative transfer equations using the discrete space theory formalism. We demonstrate that the atmospheric temperature-pressure profiles and the emission spectra both are susceptible to the values of the heat redistribution function. A reduction in the heat redistribution yields a thermal inversion in the temperature-pressure profiles and hence increases the amount of emission flux. Finally, we revisits the hot Jupiter XO-1b temperature-pressure profile degeneracy case and show that a non-inversion temperature-pressure profile best explains this observed planetary dayside emission spectra. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.08755v1
TM News 118 - CIA Podcast, Geoengineering, Hot Jupiter, Cyber Truck Boat, FB Tanking, Hurricane Ian...http://www.troubledminds.org Support The Show! https://rokfin.com/creator/troubledminds https://troubledfans.com/ https://patreon.com/troubledminds https://www.buymeacoffee.com/troubledminds https://www.twitch.tv/troubledmindsradio #aliens #conspiracy #paranormal --------------------------------------------------------------------------------------‘Langley Files': CIA launches podcast to ‘demystify' its spy workhttps://www.nbcnews.com/politics/national-security/langley-files-cia-launches-podcast-demystify-spy-work-rcna49000The CIA's New Podcast Is Propaganda That Aims to ‘Whitewash' the Agency's Dark Historyhttps://www.msn.com/en-us/news/world/the-cia-e2-80-99s-new-podcast-is-propaganda-that-aims-to-e2-80-98whitewash-e2-80-99-the-agencys-dark-history/ar-AA12aPMKThe Langley Files: A CIA Podcast - CIAhttps://www.cia.gov/stories/story/the-langley-files/The Daily Show on Twitter: "New CIA podcast https://t.co/FNaXusakVe" / Twitterhttps://twitter.com/TheDailyShow/status/1575593446823321601Trevor Noah to leave The Daily Show, saying he wants to do more standup | Trevor Noah | The Guardianhttps://www.theguardian.com/culture/2022/sep/30/trevor-noah-to-leave-the-daily-show-saying-he-wants-to-do-more-standupPhotos show the destruction caused by Hurricane Ian in Florida : The Picture Show : NPRhttps://www.npr.org/sections/pictureshow/2022/09/29/1125903958/hurricane-ian-florida-photosMeet the People Who Want to Stop the Next Hurricane by Geoengineering the Oceanhttps://www.thedailybeast.com/meet-the-people-who-want-to-stop-the-next-hurricane-by-geoengineering-the-oceanScientists Discover Massive "Ocean" Near Earth's Corehttps://www.ndtv.com/world-news/scientist-discover-massive-ocean-near-earths-core-3393825Viruses May Be “Watching” You – Lying in Wait Before Multiplying and Killinghttps://scitechdaily.com/viruses-may-be-watching-you-lying-in-wait-before-multiplying-and-killing/At least 222 people at the Grand Canyon got sick with ‘explosive' gastroenteritis, CDC sayshttps://www.fox5vegas.com/2022/09/29/least-222-people-grand-canyon-got-sick-with-explosive-gastroenteritis-cdc-says/Jupiter's Atmosphere is Surprisingly Hot - Universe Todayhttps://www.universetoday.com/157817/jupiters-atmosphere-is-surprisingly-hot/https://www.denverpost.com/2022/09/29/jareh-dalke-nsa-espionage-charges/https://www.denverpost.com/2022/09/29/jareh-dalke-nsa-espionage-charges/Why your car insurance could get you turned away from urgent care : Shots - Health News : NPRhttps://www.npr.org/sections/health-shots/2022/09/29/1124361408/er-or-urgent-care-after-car-accident-insurance-medical-billsBiotech Leader Vertex Nears Buy, Joins Crispr To Advance A Gene-Editing First| Investor's Business Dailyhttps://www.investors.com/research/breakout-stocks-technical-analysis/vertex-crispr-eye-fda-approval-for-gene-editing-first-as-vrtx-stock-nears-breakout/Life's Stresses Can Make People Focus More on Their Romantic Partner's Negative Behavior - Neuroscience Newshttps://neurosciencenews.com/stress-partner-behavior-21517/Opinion | The Crisis of Men and Boys - The New York Timeshttps://www.nytimes.com/2022/09/29/opinion/crisis-men-masculinity.htmlElon Musk's floating Cybertruck tweet torpedoed by government agencies | Fox Newshttps://www.foxnews.com/auto/elons-floating-cybertruck-tweet-torpedoed-government8 Examples of Post-Release Editinghttps://gizmodo.com/streaming-netflix-armie-hammer-beyonce-1849506990Romantic partners who get phubbed are more likely to spy on digital communications, study findshttps://www.psypost.org/2022/09/romantic-partners-who-get-phubbed-are-more-likely-to-spy-on-digital-communications-study-finds-63978McDonald's is rolling out a 'nostalgic' new Happy Meal for adultshttps://www.cnbc.com/2022/09/29/mcdonalds-is-rolling-out-a-nostalgic-new-happy-meal-for-adults.htmlWhy Wall Street has soured on Mark Zuckerberg, Facebookhttps://nypost.com/2022/09/30/why-wall-street-has-soured-on-mark-zuckerberg-facebook/Microsoft confirms new Exchange zero-days are used in attackshttps://www.bleepingcomputer.com/news/microsoft/microsoft-confirms-new-exchange-zero-days-are-used-in-attacks/Meta's AI video generator tool is already giving me nightmares | PC Gamerhttps://www.pcgamer.com/meta-ai-video-generator-announcement/Make-A-Videohttps://makeavideo.studio/https://www.cnbc.com/2022/09/29/bill-gates-youll-never-solve-climate-change-with-degrowth.html
Come watch a short video on a different kind of Jupiter. Actually this type of Jupiter may be more common in the Galaxy than our own Jupiter. Many gas giants have been found orbiting close to their parent star. To learn more visit: www.damonsbravenewworld.com
Listen on Apple, Google, Spotify, and other platforms. Ashley shares how she got into smart home automation [02:52] Josh talks about how tech has played a part in his career over the last few years [03:43] Ashley shares the first steps Ashley did to get started on sustainability and the first things she tried and tested [05:07] How did Ashley monitor if she was being sustainable? [07:51] Ashley shares how smart technology made her everyday life as a mother easier and more efficient [09:31] Josh shares where he has seen smart tech play a huge part in terms of providing help and care to others [10:42] Josh talks about the future of smart tech and sustainability and what he's excited about [12:48] Where is Ashley investing her time, energy and research next for sustainability and automation? [14:54] Josh talks about how sustainability in the workplace spill over into homes today [17:34] Ashley talks about sustainable technology solutions, policy changes, etc. [19:55] Josh shares his favorite taco spots, Tacos El Gordo and Rubio's [22:01] Ashley shares a taco spot she wants to try, Sugar Taco [23:13] Follow Ashley online LinkedIn Hot Jupiter Website | LinkedIn Follow Josh online LinkedIn Cox Communications Website | LinkedIn
Evidence of Long-Term Period Variations in the Exoplanet Transit Database ETD by Simone R. Hagey et al. on Thursday 22 September We analyze a large number of citizen science data and identify eight Hot Jupiter systems that show evidence for deviations from a constant orbital period: HAT-P-19 b, HAT-P-32 b, TrES-1 b, TrES-2 b, TrES-5 b, WASP-4 b, WASP-10 b, and WASP-12 b. The latter system is already well known to exhibit strong evidence for tidal orbital decay and serves as an important control for this study. Several other systems we identify have disputed period drifts in the literature, allowing the results here to serve as an independent analysis. The citizen science data are from the Exoplanet Transit Database (ETD), which is a global project established in 2008 by the Variable Star and Exoplanet Section of the Czech Astronomical Society. With over 400 planets and 12,000 contributed observations spanning 15 years, the ETD is brimming with potential for studying the long-term orbital evolution of close-in Hot Jupiters. We use our results to discuss prioritization of targets for follow up investigations, which will be necessary to confirm the period drifts and their causes. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.10752v1
Atmospheric characterization of the ultra-hot Jupiter WASP-33b: Detection of Ti and V emission lines and retrieval of a broadened line profile by D. Cont et al. on Thursday 22 September Ultra-hot Jupiters are highly irradiated gas giant exoplanets on close-in orbits around their host stars. We analyzed high-resolution spectra from CARMENES, HARPS-N, and ESPaDOnS taken over eight observation nights to study the emission spectrum of WASP-33b and draw conclusions about its atmosphere. By applying the cross-correlation technique, we detected the spectral signatures of Ti I, V I, and a tentative signal of Ti II for the first time via emission spectroscopy. These detections are an important finding because of the fundamental role of Ti- and V-bearing species in the planetary energy balance. Moreover, we assessed and confirm the presence of OH, Fe I, and Si I from previous studies. The spectral lines are all detected in emission, which unambiguously proves the presence of an inverted temperature profile in the planetary atmosphere. By performing retrievals on the emission lines of all the detected species, we determined a relatively weak atmospheric thermal inversion extending from approximately 3400 K to 4000 K. We infer a supersolar metallicity close to 1.5 dex in the planetary atmosphere, and find that its emission signature undergoes significant line broadening with a Gaussian FWHM of about 4.5 km/s. Also, we find that the atmospheric temperature profile retrieved at orbital phases far from the secondary eclipse is about 300 K to 700 K cooler than that measured close to the secondary eclipse, which is consistent with different day- and nightside temperatures. Moreover, retrievals performed on the emission lines of the individual chemical species lead to consistent results, which gives additional confidence to our retrieval method. Increasing the number of species included in the retrieval and expanding the set of retrieved atmospheric parameters will further advance our understanding of exoplanet atmospheres. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.10618v1
Detection of Paschen β absorption in the atmosphere of KELT-9 b: A new window into the atmospheres of ultra-hot Jupiters by A. Sánchez-López et al. on Tuesday 20 September Hydrogen and helium transmission signals trace the upper atmospheres of hot gas-giant exoplanets, where the incoming stellar extreme ultraviolet and X-ray fluxes are deposited. Further, for the hottest stars, the near-ultraviolet excitation of hydrogen in the Balmer continuum may play a dominant role in controlling the atmospheric temperature and driving photoevaporation. KELT-9 b is the archetypal example of such an environment as it is the hottest gas-giant exoplanet known to date (T$_{eq}$ $sim$ 4500 K) and orbits an A0V-type star. Studies of the upper atmosphere and escaping gas of this ultra-hot Jupiter have targeted the absorption in the Balmer series of hydrogen (n$_1$ = 2 $rightarrow$ n$_2$ $>$ 2). Unfortunately, the lowermost metastable helium state that causes the triplet absorption at 108.3 nm is not sufficiently populated for detection. Here, we present evidence of hydrogen absorption in the Paschen series in the transmission spectrum of KELT-9 b observed with CARMENES. Specifically, we focus on the strongest line covered by its NIR channel, Paschen-$beta$ at 1282.16 nm (n$_1$ = 3 $rightarrow$ n$_2$ = 5). The observed absorption shows a contrast of (0.53 $^{+0.12}_{-0.13}$)%, a blueshift of $-$14.8 $^{+3.5}_{-3.2}$ km/s, and a FWHM of 31.9$^{+11.8}_{-8.3}$ km/s. The observed blueshift in the absorption feature could be explained by day-to-night circulation within the gravitationally bound atmosphere or, alternatively, by Paschen-$beta$ absorption originating in a tail of escaping gas moving toward the observer as a result of extreme atmospheric evaporation. This detection opens a new window for investigating the atmospheres of ultra-hot Jupiters, providing additional constraints of their temperature structure, mass-loss rates, and dynamics for future modeling of their scorching atmospheres. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.01854v2
Detection of Paschen β absorption in the atmosphere of KELT-9 b: A new window into the atmospheres of ultra-hot Jupiters by A. Sánchez-López et al. on Tuesday 20 September Hydrogen and helium transmission signals trace the upper atmospheres of hot gas-giant exoplanets, where the incoming stellar extreme ultraviolet and X-ray fluxes are deposited. Further, for the hottest stars, the near-ultraviolet excitation of hydrogen in the Balmer continuum may play a dominant role in controlling the atmospheric temperature and driving photoevaporation. KELT-9 b is the archetypal example of such an environment as it is the hottest gas-giant exoplanet known to date (T$_{eq}$ $sim$ 4500 K) and orbits an A0V-type star. Studies of the upper atmosphere and escaping gas of this ultra-hot Jupiter have targeted the absorption in the Balmer series of hydrogen (n$_1$ = 2 $rightarrow$ n$_2$ $>$ 2). Unfortunately, the lowermost metastable helium state that causes the triplet absorption at 108.3 nm is not sufficiently populated for detection. Here, we present evidence of hydrogen absorption in the Paschen series in the transmission spectrum of KELT-9 b observed with CARMENES. Specifically, we focus on the strongest line covered by its NIR channel, Paschen-$beta$ at 1282.16 nm (n$_1$ = 3 $rightarrow$ n$_2$ = 5). The observed absorption shows a contrast of (0.53 $^{+0.12}_{-0.13}$)%, a blueshift of $-$14.8 $^{+3.5}_{-3.2}$ km/s, and a FWHM of 31.9$^{+11.8}_{-8.3}$ km/s. The observed blueshift in the absorption feature could be explained by day-to-night circulation within the gravitationally bound atmosphere or, alternatively, by Paschen-$beta$ absorption originating in a tail of escaping gas moving toward the observer as a result of extreme atmospheric evaporation. This detection opens a new window for investigating the atmospheres of ultra-hot Jupiters, providing additional constraints of their temperature structure, mass-loss rates, and dynamics for future modeling of their scorching atmospheres. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.01854v2
Detection of Paschen β absorption in the atmosphere of KELT-9 b: A new window into the atmospheres of ultra-hot Jupiters by A. Sánchez-López et al. on Tuesday 20 September Hydrogen and helium transmission signals trace the upper atmospheres of hot gas-giant exoplanets, where the incoming stellar extreme ultraviolet and X-ray fluxes are deposited. Further, for the hottest stars, the near-ultraviolet excitation of hydrogen in the Balmer continuum may play a dominant role in controlling the atmospheric temperature and driving photoevaporation. KELT-9 b is the archetypal example of such an environment as it is the hottest gas-giant exoplanet known to date (T$_{eq}$ $sim$ 4500 K) and orbits an A0V-type star. Studies of the upper atmosphere and escaping gas of this ultra-hot Jupiter have targeted the absorption in the Balmer series of hydrogen (n$_1$ = 2 $rightarrow$ n$_2$ $>$ 2). Unfortunately, the lowermost metastable helium state that causes the triplet absorption at 108.3 nm is not sufficiently populated for detection. Here, we present evidence of hydrogen absorption in the Paschen series in the transmission spectrum of KELT-9 b observed with CARMENES. Specifically, we focus on the strongest line covered by its NIR channel, Paschen-$beta$ at 1282.16 nm (n$_1$ = 3 $rightarrow$ n$_2$ = 5). The observed absorption shows a contrast of (0.53 $^{+0.12}_{-0.13}$)%, a blueshift of $-$14.8 $^{+3.5}_{-3.2}$ km/s, and a FWHM of 31.9$^{+11.8}_{-8.3}$ km/s. The observed blueshift in the absorption feature could be explained by day-to-night circulation within the gravitationally bound atmosphere or, alternatively, by Paschen-$beta$ absorption originating in a tail of escaping gas moving toward the observer as a result of extreme atmospheric evaporation. This detection opens a new window for investigating the atmospheres of ultra-hot Jupiters, providing additional constraints of their temperature structure, mass-loss rates, and dynamics for future modeling of their scorching atmospheres. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.01854v2
Der Planet Osiris umkreist einen fernen Stern. Und löst sich langsam auf. Warum er das tut und was wir davon lernen können erfahrt ihr in der neuen Folge der Sternengeschichten. Wer den Podcast finanziell unterstützen möchte, kann das hier tun: Mit PayPal (https://www.paypal.me/florianfreistetter), Patreon (https://www.patreon.com/sternengeschichten) oder Steady (https://steadyhq.com/sternengeschichten)
Det er ikke mange år siden vi teknologisk var helt ude af stand til at observere exoplaneter – planeter om fremmede stjerner. Men i takt med at vores instrumenter og analysemetoder er blevet bedre har vi efterhånden katalogiseret oppe omkring 5000 af slagsen. Nogle af dem er jordlignende klippeplaneter, andre er dem vi kalder Hot Jupiters – varme gaskæmper. Der vil næppe nogensinde kunne eksistere liv på den slags planeter, men ikke desto mindre kan de lære os en masse om planetdannelse og andre solsystemer. Og nu er vores instrumenter og metoder blevet så gode, at vi ikke bare kan opdage exoplaneterne, vi kan også "zoome så meget ind" at vi kan analysere deres atmosfære, og dét kan blive en kilde til endnu mere viden om vores fjerne fætre. I denne RumSnak taler vi med Alexander Rathcke, der inden sommer forsvarede sin PhD på DTU Space, hvor han har arbejdet med de store, varme Jupiter-lignende exoplaneter. Velkommen til RumSnak sæson 7
Matt and Linn chat with exoplanetary researcher Bibiana Prinoth a PhD student at the Department of Astronomy and Theoretical Physics at Lund University. If you enjoy the show please go over to www.linktr.ee/Interplanetary and become a member on Patreon. Hosts: Linn Boldt-Christmas and Matt Russell Music: Matt Russell / Iam7 Cover Image: Rob Annable - Dall-E 2
In Folge 50 feiern wir Jubiläum! Gleich zwei davon: 50 Folgen lang gibt es “Das Universum” schon und seit einem Jahr berichtet Evi über “Neues von der Sternwarte”. Das erste Jubiläum begehen wir mit zwei goldigen Geschichten über Astronomie. Ruth will goldene Hochzeit feiern und erzählt, wie Gold entstanden ist. Dabei geht es um Asteroiden, Kollisionen, Bakterien und explodierende Sterne. Auf jeden Fall aber muss ein Stern kaputt gehen, wenn wir Gold haben wollen. Florian beschäftigt sich mit dem Stern 51 Pegasi der trotz seines Namens etwas mit “50” zu tun hat. Er war auf jeden Fall enorm wichtig für die Astronomie und hat uns gezeigt, dass man nicht zu viel Annahmen treffen soll, wenn man etwas wirklich neues entdecken will. Danach erzählt Evi, wie das Jahr “Neues von der Sternwarte” so gelaufen ist. Und von unserer Telegram-Gruppe, die besser ist als alle anderen Telegram-Gruppen!
SpaceTime with Stuart Gary | Astronomy, Space & Science News
SpaceTime Series 25 Episode 30*A “hot Jupiter's” dark side is revealed in detail for first timeAstronomers have obtained the clearest view yet of the perpetual dark side of a hot Jupiter exoplanet that is “tidally locked” to its host star. The observations reported in the journal Nature Astronomy have been combined with measurements of the planet's permanent day side to provide the first detailed view of an exoplanet's global atmosphere.*New measurement for the mass of the NeutrinoScientists have determined the mass of the neutrino at less than 0.8 electron volts. The findings reported in the journal Nature physics will help sciences understanding of the Universe.*New weather satellite rockets into orbitAmerica's newest weather satellite has successfully reached geostationary orbit. The mission flew aboard a United Launch Alliance Atlas V rocket from Space Launch complex 41 from the Cape Canaveral Space Force Base in Florida.*March SkyWatchThe March equinox, the constellations Taurus the bull, Leo the lion and the Gemini twins Pollux and Castor, And don't forget March 14 is pi day and Albert Einstein's birthday are among the many features this month on Skywatch…Listen to SpaceTime on your favorite podcast app with our universal listen link: https://spacetimewithstuartgary.com/listen For more SpaceTime and show links: https://linktr.ee/biteszHQ If you love this podcast, please get someone else to listen to. Thank you…To become a SpaceTime supporter and unlock commercial free editions of the show, gain early access and bonus content, please visit https://bitesz.supercast.com/ . Premium version now available via Spotify and Apple Podcasts.For more podcasts visit our HQ at https://bitesz.com Your support is needed...SpaceTime is an independently produced podcast (we are not funded by any government grants, big organisations or companies), and we're working towards becoming a completely listener supported show...meaning we can do away with the commercials and sponsors. We figure the time can be much better spent on researching and producing stories for you, rather than having to chase sponsors to help us pay the bills.That's where you come in....help us reach our first 1,000 subscribers...at that level the show becomes financially viable and bills can be paid without us breaking into a sweat every month. Every little bit helps...even if you could contribute just $1 per month. It all adds up.By signing up and becoming a supporter at the $5 or more level, you get immediate access to over 240 commercial-free, double, and triple episode editions of SpaceTime plus extended interview bonus content. You also receive all new episodes on a Monday rather than having to wait the week out. Subscribe via Patreon or Supercast (you get a month's free trial with Supercast to see if it's really for you or not)....and share in the rewards. Details at Patreon www.patreon.com/spacetimewithstuartgary or Supercast - https://bitesznetwork.supercast.tech/ Details at https://spacetimewithstuartgary.com or www.bitesz.com For more SpaceTime visit https://spacetimewithstuartgary.com (mobile friendly). For enhanced Show Notes including photos to accompany this episode: https://www.bitesz.com/show/spacetime/blog/ RSS feed: https://www.spreaker.com/show/2458531/episodes/feed Email: mailto:SpaceTime@bitesz.comTo receive the Astronomy Daily Newsletter free, direct to your inbox...just join our mailing list at www.bitesz.com or visit https://www.bitesz.com/p/astronomy-daily/If you're enjoying SpaceTime, please help out by sharing and telling your friends. The best recommendation I can get is one by you. Thank you…#astronomy #space #science #technology #news #astrophysics #NASA
On this episode we start off talking about the new Mac's and Jesse about to hook up Dillon with something on a new Mac M1. We're talking about MIT research on masks and social distancing. We're talking about neutron stars allowing deeper understanding on the forces that bind and/or destruct nature. We're talking about the Deutsche whistleblower who went missing. We're talking about alien rain drops and how they form as well as different Hot Jupiter's atmospheres. We're also talking about Apollo 8 and the mysterious structure caught on 70mm film. We're talking about the fire of Apollo 1 and if any foul play was involved. We're talking about the Cahokian Indians celebratory past and how they got caffeine. We're talking about a new push for open source data being used to combat police brutality. We're talking about a meteor that exploded over Antarctica way back when. And we're talking about Starlink and the new contract with the Military Industrial Complex. patreon.com/theilluminatetelegraph for adfree audio Music: Death Metal - Golgothan Death of Skepsis Indy Rock - Alfred and the Teddinators Emo - Dillon Crozier HipHop - Metamorphicon: Black Matter Lives CoolDill: Love Crazy (prod. Lucky T) Show Notes: https://www.sciencenews.org/article/physics-rain-drop-size-limit-alien-planets https://www.lpi.usra.edu/resources/apollo/frame/?AS08-18-2908 https://www.hq.nasa.gov/pao/History/Apollo204/find.html http://www.bbc.com/travel/story/20210412-the-us-lost-ancient-megacity https://www.forbes.com/sites/forbesfellows/2021/04/20/how-advances-in-open-sourced-data-can-end-police-brutality/?sh=4a43b6eacec0 https://www.cnbc.com/2021/04/23/mit-researchers-say-youre-no-safer-from-covid-indoors-at-6-feet-or-60-feet-in-new-study.html https://www.arl.army.mil/business/technology-transfer/cradas/ https://arstechnica.com/information-technology/2020/05/spacex-and-us-army-sign-deal-to-test-starlink-broadband-for-military-use/ https://whistleblowersblog.org/2021/04/articles/corporate-whistleblowers/deutsche-bank-whistleblower-goes-missing/ https://phys.org/news/2021-04-distant-spiralling-stars-clues-sub-atomic.html https://www.sciencenews.org/article/ancient-meteor-explosion-over-antarctica-impact-rock --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app --- Send in a voice message: https://anchor.fm/theskepsistelegraph/message Support this podcast: https://anchor.fm/theskepsistelegraph/support
Boise State Physics presents this month's First Friday Astronomy Lecture on May 3 where Dr. Henry Ngo of the National Research Council of Canada will discuss finding and researching the giant, gaseous exoplanets of the Milky Way. Dr. Ngo joins Friday's Idaho Matters to talk about what we can learn from these 'Hot Jupiters.'
Live from Cambridge; Complete the Science Headline; News Items: Reliability vs Validity, Soyuz Failed Launch, Hot Jupiters, Bottom Baryons, UFO Government Waste, What Is Psychopathy; Science or Fiction