Colloquia Schedule Spring 2014
Colloquia are on Tuesdays (unless otherwise indicated) at 3:30 pm in RLM 15.216B
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No talk scheduled. |
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"The Connection between Star Formation and the Cold Interstellar Medium in Nearby Galaxies" University of Arizona host: Shardha Jogee |
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"The Unusual Eclipser of the Young Star J1407: Moon-forming Circumplanetary Disk?" University of Rochester host: TBA |
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"A Calibration of the Stellar-mass Fundamental Plane at
Massachusetts Institute of Technology host: Pawan Kumar |
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Tinsley Visiting Scholar, Interstellar Matter Group "Volatiles in Protoplanetary Disks" Volatiles are compounds with low sublimation temperatures, and they make up most of the condensible mass in typical planet-forming environments. They consist of relatively small, often hydrogenated, molecules based on the abundant elements carbon, nitrogen and oxygen. Volatiles are central to the process of planet formation, forming the backbone of a rich chemistry that sets the initial conditions for the formation of planetary atmospheres, and act as a solid mass reservoir catalyzing the formation of planets and planetesimals. In the past few years that representative samples of molecules have been discovered in great abundance throughout protoplanetary disks (CO, H2O, HCN, C2H2, CO2, HCO+) - enough to begin building a complete budget for the most abundant elements after hydrogen and helium. The spatial distributions of key volatiles are being mapped, snow lines are directly seen and quantified, and distinct chemical regions within protoplanetary disks are being identified, characterized and modeled. Theoretical processes invoked to explain the solar system record are now being observationally constrained in protoplanetary disks, including transport of icy bodies and concentration of bulk condensibles. The balance between chemical reset - processing of inner disk material strong enough to destroy its memory of past chemistry, and inheritance - the chemically gentle accretion of pristine material from the interstellar medium in the outer disk, ultimately determines the final composition of pre-planetary matter. I will discuss how these advances in observations of protoplanetary disks help us to better understand exoplanetary systems as well as our own solar system. Space Telescope Science Institute (STScI) host: Neal Evans |
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DeVaucouleurs Medalist: COLLOQUIUM "Connecting Gas to Stars in Galaxies" University of Cambridge, UK host: Neal Evans |
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DeVaucouleurs Medalist: PUBLIC LECTURE "The Hidden Universe Revealed" University of Cambridge, UK host: Neal Evans |
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"The Seeds of Massive Galaxies" University of Edinburgh host: Shardha Jogee |
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"Our Galactic Supermassive Black Hole Sgr A*: The Ideal Testbed for Theories of Accretion and Black Hole Life Cycles" University of Amsterdam host: Pawan Kumar |
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Spring Break: 10-14 March: No talk scheduled. |
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"Rest-frame Optical Spectra: A Window into Galaxy Formation at z~2" University of California, Los Angeles host: Steve Finkelstein |
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Tinsley Visiting Scholar, Stars Group "Hunting the First Generations of Stars and Galaxies" Massachusetts Institute of Technology host: Fritz Benedict |
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"Shadows of Their Future Selves: Accretion and Obscuration in Young Stellar Objects" Lowell Observatory host: Adam Kraus |
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"Head in the Clouds: Decoding the Spectral Features Produced by Brown Dwarf and Exoplanent Atmospheres" Hunter College/AMNH host: Adam Kraus |
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PhD Defense Presentation "Measuring Dark Matter Profiles Non-Parametrically in Dwarf Spheroidal Galaxies" University of Texas at Austin |
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"Hunting the First Galaxies with Gravitational Lensing" Space Telescope Science Institute (STScI) host: Steve Finkelstein |
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Tinsley Visiting Professor "Adventures in Cosmic Star Formation" National Optical Astronomy Observatory (NOAO) host: TBA |
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Tinsley Visiting Scholar, Exgal Group "MaNGA: Mapping Nearby Galaxies at Apache Point Observatory An IFU Survey of 10,000 Galaxies" University of Tokyo, IPMU host: Niv Drory |
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Tinsley Visiting Scholar, Planets Group "Extrasolar Planets with Small Telescopes" Princeton University host: Mike Endl |
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No talk scheduled. |
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"Stark Broadening of Hydrogen Spectral Lines in Plasmas: Advanced Theories, Benchmark Experiments, Astrophysical Applications" Auburn University host: Don Winget |
Visitors to the Department of Astronomy can find detailed information and maps on our Visiting Austin Page.
Please report omissions/corrections to: G. Orris at argus@astro.as.utexas.edu.
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