Podcasts about virgo cluster

Our home galaxy, the Milky Way, belongs to a small cluster of galaxies – the Local Group. It has fewer than a hundred known members. But most galaxies reside in much more impressive clusters. And the closest of these is centered in the constellation Virgo, which steps up the eastern sky this evening. The Virgo Cluster contains roughly 2,000 galaxies. They move through space together, bound by their mutual gravitational pull. The cluster’s most impressive member is Messier 87. It marks the center of the cluster, more than 50 million light-years away. M87 may span a million light-years and contain trillions of stars – many times the corresponding values for the Milky Way. And its total mass is more than twice the Milky Way’s. M87 is a different type of galaxy. The Milky Way is a spiral – a flat disk highlighted by “arms” of bright stars that make it look like a pinwheel. M87, on the other hand, is elliptical – it resembles a fat, fuzzy football. It may have grown so large through the mergers of several big galaxies. That scrambled the stars, so they orbit the center of M87 in all directions. The heart of the galaxy harbors a black hole more than a thousand times the mass of the central black hole in the Milky Way. It was the first black hole to have its picture taken – a dark shadow at the heart of a giant galaxy. More darkness in Virgo tomorrow. Script by Damond Benningfield

A busy galaxy is puffing out material like a factory smokestack. The “plume” is 20,000 light-years long, and it contains enough gas to make 50 million stars as massive as the Sun. NGC 4383 is about 60 million light-years away. It’s a member of the Virgo Cluster – a collection of hundreds of galaxies. Like our home galaxy, the Milky Way, NGC 4383 is a spiral. Bright “arms” of hot, young stars wrap around the galaxy’s heart. The galaxy is a hotbed of star formation – it’s giving birth to thousands of stars. Many of them are especially hot and massive. They blow strong winds of hot gas. And when they die, they explode, creating an even heavier flow. That flow pushes the gas that’s around the stars, creating the powerful “chimney.” Gas in that outflow moves at an average of about 670,000 miles per hour. And every year, enough gas is added to make two more Suns. All that activity reduces the amount of gas available to make more stars. So eventually, the outflow of gas will shut down the stellar nursery in this busy galaxy. Although it’s a member of the Virgo Cluster, NGC 4383 is located within the borders of Coma Berenices. The constellation is low in the east in early evening. It consists of a faint spray of sparkly stars, although you need dark skies to see them. You need a telescope to see NGC 4383. Script by Damond Benningfield

Does sound travel faster in space? Is the multiverse theory true? Can gravity escape a black hole? In our latest episode of our popular “Chuck GPT” series, Dr. Charles Liu and co-host Allen Liu welcome our Social Media/Patreon Community Director Stacey Severn to answer fan questions collected from Patreon patrons, students, Facebook and YouTube. As always, though, we start off with the day's joyfully cool cosmic thing: the recently released Euclid space telescope image of galactic cluster Abell 2390, which is about 2.7 billion light years away from Earth, in which more than 50,000 galaxies are visible. You'll also hear about the Coma Cluster, the Virgo Cluster, the closest galactic cluster to us, and the planned Nancy Grace Roman Space Telescope. Our first fan question comes from Emil R. on Patreon: “I wonder what would happen, if you tied one end of a really, really long rope to the International Space Station and have the other end hang down all the way down in the Earth's atmosphere. Would the current speed of the ISS circling the globe counteract the fact that the rope is in the atmosphere and experiencing drag? Would people on airplanes be able to see a rope swing by? Would the end of the rope on the ISS be stretched out or loose, and would it drag the ISS down in its orbit?” Allen, who loves this question, addresses orbital velocity, drag, momentum, conservation of energy, space tethers, sky hooks, space elevators, and the ISS. Chuck talks about having seen the Tethered Satellite System trailing behind the Space Shuttle through the telescope he was using for his doctoral dissertation in the 1990s! Our first student question comes from Michael L.: “Is the multiverse theory true?” Chuck's answer involves eternal inflation, bubble universes, quantum mechanics, many worlds, and, somehow, Schrödinger's cat. From Facebook, Steven B. asks: “We all know that warp drive is still science fiction. But what is developing with other kinds of propulsion? Have we reached the limit of chemical propellants? What is happening with ion drives and nuclear systems?” Allen reviews the state of the art, including Ad Astra's VASIMIR engine, which we covered in our 2-part episode Star Trucking with Franklin Chang-Diaz and Miranda Chang. Our next student question is from Roberto J.: “How was gravity created?” Chuck says that while we just don't know for certain, gravity may have come into existence during the “Plank time” at the very start of our universe before cosmic inflation began. YouTuber @UnexpectedBooks asks, “How can gravity be “transmitted” via gravitons? It seems that a black hole would have no mass, because gravitons, like everything else, couldn't escape it.” Chuck explains that even though definitely black holes have mass, if gravitons exist, they must be able to leave the event horizon, and Allen points out that gravitational waves do just that. Our last student question is from Omar: “Does sound travel faster in space?” Chuck describes how sound waves travel, and why there's enough particulate matter in space to still allow it, possibly even faster than here on Earth. We end on a Patreon question from Eric S.: “The Heisenberg uncertainty principle is a casualty of the particular mathematics we have used to explore the quantum world. If we were to adjust those mathematics to a less consistent but more complete axiomatic viewpoint, could it be possible to 'see deeper'?” Chuck and Allen's answer involves high-order math, the Heisenberg uncertainty principle, string theory and quantum mechanics. We hope you enjoy this episode of The LIUniverse, and, if you do, please support us on Patreon.   Credits for Images This Episode: – Euclid telescope image of Abell 2390 – ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi, ESA license – Virgo Cluster of Galaxies – Chris Mihos (Case Western Reserve University)/ESO, CC BY 4.0 – Coma Cluster of Galaxies – Nielander, Public Domain – Hubble telescope image of Abell 2390 – NASA, ESA, & Johan Richard (Caltech, USA), Public Domain – Roman Space Telescope under construction – NASA/Chris Gunn, Public Domain – Space Elevator Artist's concept – Andrei Sokolov – The ISS in orbit – NASA, Public Domain – The Tethered Satellite System – Space Shuttle – NASA, Public Domain (Image: https://commons.wikimedia.org/wiki/File:STS-46_TSS-1_fully_extended.jpg) – Many-worlds depiction of Schrödinger's cat – Christian Schirm, Public Domain – NEXIS Ion thruster – Jet Propulsion Laboratory, Public Domain – Design of NASA & DARPA's DRACO nuclear rocket – DARPA, Public Domain – History of the universe diagram – NASA/WMAP Science Team, Public Domain – Artist's animation of gravitational waves – LIGO/T. Pyle, free to use – Fourier transform of a signal – Wawo1102, Public Domain – Waveform of same signal – Made with Desmos, Attribution – Wavelet (Gabor) transform of same signal – Wawo1102, Public Domain #TheLIUniverse #CharlesLiu #AllenLiu #SciencePodcast #AstronomyPodcast  #Euclidspacetelescope #galacticcluster #Abell2390 #VirgoCluster #ComaCluster #darkmatter #darkenergy #orbitalvelocity #momentum #conservationofenergy #spacetethers #skyhooks #spaceelevators #ISS #InternationalSpaceStation #TetheredSatelliteSystem #SpaceShuttle #multiverse #theoryofthemultiverse #eternalinflation #bubbleuniverses #quantummechanics #manyworldstheory #schrodingerscat #soundwaves #blackhole #gravitons #gravity #Planktime #BigBang #Heisenberguncertaintyprinciple

From November 18, 2021. A new research project called the Virgo Environment Traced in Carbon Monoxide Survey (VERTICO) used data collected by the Atacama Large Millimeter/submillimeter Array (ALMA) to understand just what is stripping star-forming gases out of the Virgo Cluster of galaxies. Plus, calderas, a mass extinction, and this week's What's Up.   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.

VERTICO III: The Kennicutt-Schmidt relation in Virgo cluster galaxies by M. J. Jiménez-Donaire et al. on Wednesday 30 November In this VERTICO science paper we aim to study how the star formation process depends on galactic environment and gravitational interactions in the context of galaxy evolution. We explore the scaling relation between the star formation rate (SFR) surface density and the molecular gas surface density, also known as the Kennicutt-Schmidt (KS) relation, in a subsample of Virgo cluster spiral galaxies. We use new ACA and TP observations from the VERTICO-ALMA Large Program at 720pc resolution to resolve the molecular gas content, as traced by the 12CO(2-1) transition, across the disks of 37 spiral galaxies in the Virgo cluster. In combination with archival observations, we estimate the parameters of the KS relation for the entire ensemble of galaxies, and within individual galaxies. We find the KS slope for the entire population to be N=0.97+/-0.07, with a characteristic molecular gas depletion time of 1.86Gyr for our full sample, in agreement with previous work in isolated star-forming galaxies. In individual galaxies, we find KS slopes ranging between 0.69 and 1.40, and typical star formation efficiencies (SFE) that can vary from galaxy to galaxy by a factor of ~4. These galaxy-to-galaxy variations account for ~0.20dex in scatter in the ensemble KS relation, which is characterized by a 0.42dex scatter. We find that the HI-deficient galaxies in the Virgo cluster show a steeper resolved KS relation and lower molecular gas efficiencies than HI-normal cluster galaxies. While the molecular gas content in Virgo cluster galaxies appears to behave similarly to that in isolated galaxies, our VERTICO sample shows that cluster environments play a key role in regulating star formation. The environmental mechanisms affecting the HI galaxy content also have a direct impact in the SFE of molecular gas in cluster galaxies, leading to longer depletion times in HI-deficient members. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16521v1

VERTICO III: The Kennicutt-Schmidt relation in Virgo cluster galaxies by M. J. Jiménez-Donaire et al. on Wednesday 30 November In this VERTICO science paper we aim to study how the star formation process depends on galactic environment and gravitational interactions in the context of galaxy evolution. We explore the scaling relation between the star formation rate (SFR) surface density and the molecular gas surface density, also known as the Kennicutt-Schmidt (KS) relation, in a subsample of Virgo cluster spiral galaxies. We use new ACA and TP observations from the VERTICO-ALMA Large Program at 720pc resolution to resolve the molecular gas content, as traced by the 12CO(2-1) transition, across the disks of 37 spiral galaxies in the Virgo cluster. In combination with archival observations, we estimate the parameters of the KS relation for the entire ensemble of galaxies, and within individual galaxies. We find the KS slope for the entire population to be N=0.97+/-0.07, with a characteristic molecular gas depletion time of 1.86Gyr for our full sample, in agreement with previous work in isolated star-forming galaxies. In individual galaxies, we find KS slopes ranging between 0.69 and 1.40, and typical star formation efficiencies (SFE) that can vary from galaxy to galaxy by a factor of ~4. These galaxy-to-galaxy variations account for ~0.20dex in scatter in the ensemble KS relation, which is characterized by a 0.42dex scatter. We find that the HI-deficient galaxies in the Virgo cluster show a steeper resolved KS relation and lower molecular gas efficiencies than HI-normal cluster galaxies. While the molecular gas content in Virgo cluster galaxies appears to behave similarly to that in isolated galaxies, our VERTICO sample shows that cluster environments play a key role in regulating star formation. The environmental mechanisms affecting the HI galaxy content also have a direct impact in the SFE of molecular gas in cluster galaxies, leading to longer depletion times in HI-deficient members. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16521v1

Seamless video-capture of every procedure & AI-powered patient selection for clinical trials, these are a few of the services Virgo can offer. Join the conversation with Matt to learn about the origins of Virgo, their first MVP, their funding journey, their unique business strategy, future of GI data and a bit about Astrophotography!Special thanks to Matthew Zhao (UCLA) for intro and conclusion!

VERTICO IV: Environmental Effects on the Gas Distribution and Star Formation Efficiency of Virgo Cluster Spirals by Vicente Villanueva et al. on Monday 17 October We measure the molecular-to-atomic gas ratio, $R_{rm mol}$, and the star formation rate (SFR) per unit molecular gas mass, SFE$_{rm mol}$, in 38 nearby galaxies selected from the Virgo Environment Traced in CO (VERTICO) survey. We stack ALMA $^{12}$CO(J=2-1) spectra coherently using hi velocities from the VIVA survey to detect faint CO emission out to galactocentric radii $r_{rm gal} sim 1.2,r_{25}$. We determine the scale-lengths for the molecular and stellar components, finding a $sim$3:5 relation between them, and indicating that CO emission tends to be more centrally concentrated than stellar mass in VERTICO galaxies when compared to field galaxies. While the spatially-resolved $R_{rm mol}$ shows a decreasing trend with radius similar to field samples, the mean molecular-to-atomic gas ratio within the stellar effective radius $R_{rm e}$, $R_{rm mol}(r

VERTICO IV: Environmental Effects on the Gas Distribution and Star Formation Efficiency of Virgo Cluster Spirals by Vicente Villanueva et al. on Tuesday 11 October We measure the molecular-to-atomic gas ratio, $R_{rm mol}$, and the star formation rate (SFR) per unit molecular gas mass, SFE$_{rm mol}$, in 38 nearby galaxies selected from the Virgo Environment Traced in CO (VERTICO) survey. We stack ALMA $^{12}$CO(J=2-1) spectra coherently using hi velocities from the VIVA survey to detect faint CO emission out to galactocentric radii $r_{rm gal} sim 1.2,r_{25}$. We determine the scale-lengths for the molecular and stellar components, finding a $sim$3:5 relation between them, and indicating that CO emission tends to be more centrally concentrated than stellar mass in VERTICO galaxies when compared to field galaxies. While the spatially-resolved $R_{rm mol}$ shows a decreasing trend with radius similar to field samples, the mean molecular-to-atomic gas ratio within the stellar effective radius $R_{rm e}$, $R_{rm mol}(r

A new research project called the Virgo Environment Traced in Carbon Monoxide Survey (VERTICO) used data collected by the Atacama Large Millimeter/submillimeter Array (ALMA) to understand just what is stripping star-forming gases out of the Virgo Cluster of galaxies. Plus, calderas, a mass extinction, and this week's What's Up.

Some amateur astronomers in the northern hemisphere say that Spring is galaxy season. Basically what that means is that the Virgo Cluster is high in the evening sky.

Some amateur astronomers in the northern hemisphere say that Spring is galaxy season. Basically what that means is that the Virgo Cluster is high in the evening sky.

It's a patchy, pale river in the sky - and a twirling spiral of 400 billion stars. It’s also headed for a dazzling intergalactic train wreck. Welcome to our Milky Way.

What to look out, and up, for in May. We start with the constellation of Hercules in our beginner’s and young observer’s guide. Next up is the moon and our round up of the craters and interesting lunar features you can explore with a small telescope. Halley's Comet brings us the peak of the Eta Aquarids on the night of 5th/6th May while Comet LINEAR has the potential to deliver a meteor storm on the night of 23rd/24th May. Mars, Saturn & Jupiter feature in the planetary round up for Northern Hemisphere observers this month and we finish off by galaxy hunting around the Virgo Cluster.

High Charged Eclectic mix of DnB Subgenres filled with enough beer spillers to make anyone stack it. To anyone that's stacked it and kept right on going this one is for you!

To anyone that's stacked it during a show and kept right on going this one is for you!

M84 is a massive elliptical galaxy located about 55 million light years from Earth in the Virgo Cluster.