Yao-Lun Yang: The ALMA View of Complex Chemistry toward Embedded Protostars (screen overlit solved)
Planet formation may start during the embedded phase of star formation. In this scenario, the chemistry of embedded disks may directly determine the chemical composition of the forming planets. In recent years, observations discover several embedded protostars that have developed complex chemistry at the disk-forming region. However, only a few observations attempt to constrain the occurrence of complex molecules at embedded protostars and their relationships to star formation processes. I will present the first result of the Perseus ALMA Chemistry Survey (PEACHES), which aims to unbiasedly survey the chemistry toward 47 embedded protostars with a spatial resolution comparable to the size of disk-forming region. In PEACHES, we identify a variety of molecules and their isotopologues, including CCH, c-C3H2, SO, SO2, CH3OH, CH3CN, CH3OCHO, CH3OCH3, and C2H5OH. I will discuss the detection statistics of these molecules with respect to the physical properties of these protostars, such as their evolutionary stages and disk properties. I will also discuss the correlations of these complex molecules and the comparison with the chemistry of the protostars at other regions and environments. The occurrence rate of different complex molecules learned from the PEACHES survey will provide a primer for constraining chemical evolution during the star formation. 5/27 (Wednesday) 14:20 - 15:20
Motivational Journeys - Episode 6: Interview with Murthy Gudipati
Dr. Murthy Gudipati of JPL-Caltech works on understanding the physics and chemistry of interstellar and Solar System ices through laboratory simulations, observations and instrumentation or simply evolution of ices in the Universe. Originally from a small village in southern India, Dr Gudipati tells us about the journey that his career has taken him on. His key pieces of advice include to be resilient, think out of the box, keep reprioritising your activities and make sure that you have back-up plans. Presented by Rutu Parekh, DLR.
A Lightcurve Films production for EPEC Diversity Working Group. Acknowledgements: Europlanet Society, Europlanet Diversity Committee, EPEC Committee.
Technosignatures vs. Biosignatures: Which Will Succeed First?
Thirty-five years ago, a group of entrepreneurs and scientists founded the SETI Institute – the first scientific institute dedicated to the search for extraterrestrial life in the universe. We’re excited to commemorate this anniversary. We invited SETI Institute co-founder Jill Tarter and 2018 Drake Award Recipient Vikki Meadows to discuss the challenges and possible future strategies for the detection of life. Initiated by Jill Tarter in 1990s, Project Phoenix marked the first systematic search for technosignatures. Today, the Allen Telescope Array and Laser SETI are driving our technosignature search. The discovery that exoplanets are common has radically changed our view of the universe. The likelihood that there are habitable worlds elsewhere in the universe seems more plausible than ever before. Astronomers, including Vikki Meadows, are developing new instruments to help search for life on other planets. By analyzing data from exoplanets and identifying biosignatures, we will be able to search for habitable planets and the presence of life. Which approach will discover the first evidence of extraterrestrial life? Will technosignatures or biosignatures confirm our hypothesis that life exists outside our watery, shimmering planet and that, indeed, we are not alone? Molly Bentley, the co-host and producer of the radio program and podcast, Big Picture Science, will be the moderator.
A New Martian Biosignature?
An exploration of the discovery of strange oxygen levels on Mars that may hint that there is microbial life active on that planet. Event Horizon: https://www.youtube.com/eventhorizonshow My Patreon: https://www.patreon.com/johnmichaelgodier Papers: "Seasonal variations in atmospheric composition as measured in Gale Crater, Mars", Trainer et al., 2019 https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019JE006175 Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Hubble’s Panchromatic Comparative View of Exoplanet Atmospheres
1080P - 60
Host: Mercedes Lopez-Morales Speaker: David Sing (STScI) Abstract: To date, Hubble has played the definitive role in the characterization of exoplanet atmospheres. From the first planets available, we have learned that their atmospheres are incredibly diverse. With HST, JWST, and TESS a new era of atmospheric studies is opening up, where wide scale comparative planetology is now possible. Such studies can provide insight into the underlying physical process through comparative studies. Hubble’s full spectroscopic capabilities are now being used to produce the first large-scale, simultaneous UVOIR comparative study of 20 exoplanets ranging from super-Earth to Neptune and Jupiter sizes. With full UV to infrared wavelength coverage, an entire planet’s atmosphere can be probed simultaneously and with sufficient numbers of planets, it will be possible to statistically compare their features with physical parameters. The panchromatic treasury program aims at build a lasting HST legacy, providing the UV and blue-optical exoplanet spectra which will be unavailable to JWST, providing key insights into clouds and mass loss. I will review the highlights of the program to date, which include atmospheric water resolved in emission and new absorption features seen in transmission such as escaping ionized metals. I will also present the latest findings from the ongoing Hubble Treasury program and discuss synergies with JWST.
How to Build a Planet
This video have been updated. A new version can be found here: https://youtu.be/A_-zI-Lwno8
How Do We Use Spectroscopy to Search for Life?
NASA’s James Webb Space Telescope has several powerful scientific instruments, called spectrographs, on board. With these, scientists can look at newly forming planetary systems and identify the unique signatures of molecules in space. Credit: Produced by the Space Telescope Science Institute’s Office of Public Outreach. • Narration: Nicole Fonarow
• Writing: Joel Green and Vonessa Schulze
• Design: Leah Hustak All images, illustrations, and videos courtesy of NASA and STScI except: • Webb telescope animation courtesy of NASA, SkyWorks Digital, Northrop Grumman, STScI
• Music courtesy of Associated Production Music (www.apm.com)
• Sound effects courtesy of FreeSound.org and SoundBible.com The science operations for NASA’s James Webb Space Telescope, developed in partnership with the European Space Agency and the Canadian Space Agency, are conducted by AURA’s Space Telescope Science Institute. Many thanks to Greg Bacon, John Godfrey, Hussein Jirdeh, Jason Kalirai, Brandon Lawton, Alexandra Lockwood, Marc Lussier, Charlie McWade, Bonnie Meinke, Joseph Olmsted, Roy Renza, Denise Smith, and Frank Summers.
Is Proxima B Able to Support Life?
Stanford Pre-Collegiate Summer Institutes 2019 - Astrochemistry
Students were asked to create a five-page research paper on a subject related to Astrochemistry of their choosing. I created this video as a visual representation of my research paper, in which I explore the possibility of life on Proxima B. Thanks for watching!
Astrochemistry at the dawn of star and planet formation | SEMINARIO 11-10-2019 |
Ponente: Paola Caselli, directora del Max-Planck-Institute for extraterrestrial Physics Molecules are unique tracers of the dynamical and chemical evolution of star and planet forming regions. Thus, astrochemistry is crucial to test theories and shed light on our origins. In this talk I shall review the chemical and physical structure of interstellar clouds, where stars and planets are formed, as well as theoretical work on protoplanetary disk formation and early evolution. Links to our Solar System will be made.
The Cold Molecular Medium around Distant Massive Galaxies: Light up the Darkness!
| SEMINARIO 14-6-2019 | Ponente: Bjorn Emonts (National Radio Astronomy Observatory, Charlottesville, EEUU). La evolución de las galaxias está estrechamente ligada a los procesos que ocurren en el medio circumgaláctico (CGM). Desafortunadamente, la mayoría de los bariones en el CGM son demasiado débiles para ser fácilmente detectados. En el alto z, vemos destellos de halos barínicos oscuros a través de líneas de absorción de cuásar, o radiación de enfriamiento emitida como ly-Alpha. Sin embargo, una conexión directa con el crecimiento estelar de galaxias masivas ha permanecido desaparecida durante mucho tiempo, porque todavía teníamos que identificar el último depósito de gas halo que puede alimentar la formación de estrellas y galaxias, a saber, el gas molecular frío (~ 10-100 K). En esta charla, se presentarán observaciones de CO y [CI] sensibles de bajo brillo superficial de gas molecular generalizado a través de los halos gigantes de ly-Alpha a grandes cambios de rojo. Estos resultados implican que las galaxias masivas que se forman dentro de estos halos crecen a partir de gas acreado y reciclado en el CGM. Se explicarán los desafíos técnicos involucrados en la iluminación de estos reservorios de gas molecular frío hasta ahora escondidos. Esto lleva a la cuestión de la cantidad de gas molecular en el universo que todavía estamos perdiendo... Se moastrará cómo las observaciones de bajo brillo superficial con futuros interferómetros de radio, con especial énfasis en la matriz muy grande de próxima generación, prometen revolucionar nuestra visión del universo molecular.
_______________ The evolution of galaxies is tightly linked to processes that occur in the circum-galactic medium (CGM). Unfortunately, most of the baryons in the CGM are too faint to be easily detected. At high-z, we view glimpses of dark baryonic halos through quasar absorption lines, or cooling-radiation emitted as Ly-alpha. However, a direct connection with the stellar growth of massive galaxies has long remained missing, because we had yet to identify the ultimate reservoir of halo gas that can fuel the formation of stars and galaxies, namely the cold molecular gas (~10-100 K). I will present sensitive low-surface-brightness CO and [CI] observations of widespread molecular gas across giant Ly-alpha halos at high redshifts. These results implicate that massive galaxies forming within these halos grow from accreted and recycled gas in the CGM. I will explain the technical challenges involved in lighting up these hitherto hidden reservoirs of cold molecular gas. This leads to the question of how much molecular gas in the Universe we are still missing… I will show how low-surface-brightness observations with future radio interferometers, with particular emphasis on the Next-Generation Very Large Array, promise to revolutionize our view of the molecular Universe. #SeminarioCAB #astrobiología #astrobiology #Galaxies #astrofísica
"Astrochemistry at the dawn of star and planet formation" by Paola Caselli
Dr. Paola Caselli, from the Max Planck Institute for Extraterrestrial Physics, visited ICCUB on March 21st 2019. Molecules are unique tracers of the dynamical and chemical evolution of star and planet forming regions. Thus, astrochemistry is crucial to test model predictions and to shed light on our origins. Stars and planetary systems in our Galaxy form within dense (n(H2) ~ 100,000 cm-3) and cold (T ~ 10 K) fragments of interstellar molecular clouds, called pre-stellar cores. Important chemical processes take place at this early stage, such as isotope fractionation, production of complex organic molecules and growth of thick icy mantles onto sub-micrometer sized dust grains, where water and organics are stored, and which boost dust coagulation. These processes can affect later phases of star and planet formation, which can now be traced with powerful interferometers such as ALMA and NOEMA. The chemical and physical structure of pre-stellar and protostellar cores will also be review, as well as a glance to theoretical work on prototostellar disk formation and early evolution.
ASTROCHEMISTRY IN THE INTERSTELLAR MEDIUM
RED 19 - Valentine Wakelam - Laboratoire d'astrophysique de Bordeaux
FROM CHEMISTRY TO BIOLOGY
RED 19 - Matthew W. Powner - University College London
Turns out we have a very soggy Solar System - Orbit 11.49
Former NASA Deputy Chief Technologist Jim Adams joins us for story time. We talk about the planetary status of Pluto, the Kármán line, how moist the solar system seems to be, microbial life on Mars and so much more! Launch Minute
Everything scrubbed this week... But get ready for next week with SIX scheduled launches! Yikes! Space News:
Welcome to Space, Spaceship 2
Cosmonauts perform Soyuz Surgery
Voyager 2 is interstellar If you would like to continue the conversation we have a few great ways to do that:
- Comment right here on YouTube. We'll comment back or even feature it in the show
- Create a new post on our community forum at https://community.tmro.tv
- Head over to our real-time Discord channel here: https://discord.gg/9NkkFWD
Astrochemistry Finding Molecular 'Fingerprints' in Space
NRAO astronomer Anthony Remijan describes a new technique for finding the "fingerprints" of molecules in Orion's gigantic star-forming region using ALMA and the GBT radio telescopes. Credit: NRAO/AUI/NSF, Fortman, et al., NASA/ESA.
How planets form - Prof. Karin Oberg
Harvard University Professor of astrochemistry Karen Oberg tells us how planets are formed! For a more in-depth look into this process watch #LivingUniverse 2018! TICKETS
To watch #LivingUniverse get your tickets here! www.livinguniverse.com.au/tickets SOCIAL MEDIA Facebook: https://www.facebook.com/livinguniver...
The process of star formation, from giant molecular clouds to protostars.
AoTATX #42: Astrochemistry: From noxious gases to life-bringing molecules
University of Massachusetts Amherst graduate student Brandt Gaches talks about how complex life-bringing molecules are found in space. From Astronomy on Tap ATX #42, held at The North Door in Austin, Texas on March 20th, 2018.
Exoplanet Space Missions Over The Next Decade
With the selection of Ariel by ESA, exoplanetary scientists are now looking forward to a data-rich decade with numerous space telescopes coming our way soon. In this video we break down the different missions coming up and some of the differences between them. ::More about this Video:: ► TESS website: https://tess.gsfc.nasa.gov
► CHEOPS website: http://cheops.unibe.ch
► JWST website: https://www.jwst.nasa.gov
► WFIRST website: https://wfirst.gsfc.nasa.gov
► PLATO website: http://sci.esa.int/plato/
► ARIEL website: https://ariel-spacemission.eu
► Mars detection telegrams: http://www.astronomerstelegram.org/?read=11448 and http://www.astronomerstelegram.org/?read=11449
► Yi, Chen & Kipping (2018): "Forecasting the detectability of known radial velocity planets with the upcoming CHEOPS mission": https://arxiv.org/abs/1801.05595
► Columbia University Department of Astronomy: http://www.astro.columbia.edu
► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu
► Outro music by 8-bit Universe "Harder Better Faster Stronger [8 Bit Cover Tribute to Daft Punk]": https://8bituniverse.bandcamp.com/track/harder-better-faster-stronger-8-bit-tribute-to-daft-punk ::Playlists For Channel:: Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
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ASTROCHEMISTRY THE OBSERVATIONS OF MOLECULES AND SOLIDS IN SPACE
Astrobiology 2017 - Training School - Sun Kwok