Colloquia Schedule Fall 2012
Colloquia are on Tuesdays (unless otherwise indicated) at 3:30 pm in RLM 15.216B
"Finding and Characterizing the Sources of the Ionizing Background with Keck and HST" University of California, Riverside host: Steve Finkelstein |
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1. "Investigating the Early Universe with Lyman-alpha Emission: Galactic Winds and Stellar Populations at z ~ 3.1" Abstract 2) "Two Can't Play That Game": The existence of planets born in environments highly perturbed by a stellar companion represents a major challenge to the paradigm of planet formation. In numerical simulations, the presence of a close binary companion stirs up the relative velocity between planetesimals, and a protoplanetary gas disk exacerbates the issue by differentially phasing planetesimal orbits, ultimately interfering or altogether halting the delicate phase of assembly of planetary embryos. However, the detection of several planets in tight binary systems and the recent discovery of circumbinary "Tatooine" planets (including the multiple-planet system Kepler-47) establishes that planet formation in binary environments is clearly viable. I will discuss a number of physical processes (including the hitherto unexplored complication of small-scale turbulence in the disk) that conspire to make the binary environment particularly hostile to planetary assembly. 1. Emily McLinden, 2. Stefano Meschiari, and 3. Michael Pavel University of Texas at Austin host: Sarah Tuttle |
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"Star Formation, Near and Far (y un anyo en Ame'rica del Sur)" University of Texas at Austin host: Steve Finkelstein |
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"Measuring Galaxy Evolution from Modern Near-IR Surveys" Texas A&M University host: Steve Finkelstein |
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"Carbon Stars and Dust Production in the Local Group" Cornell University host: Harriet Dinerstein |
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"Peering Through the EoR Window with the Murchison Widefield Array" University of Washington host: Neal Evans |
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"HETDEX Status" University of Texas at Austin host: Steve Finkelstein |
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"Stellar Feedback and the Ecology of the Galactic ISM" University of Colorado, Boulder host: Keely Finkelstein |
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"Obesity in the Universe: Why Did Early-Type Galaxies Grow in Size?" California Institute of Technology host: Paul Shapiro |
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"The Gaseos Environment of Distant Galaxies" University of California, Santa Cruz host: Chris Sneden |
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"Cassini-Huygens explores the Saturn System: Recent Discoveries and Science Highlights" Jet Propulsion Laboratory host: Bill Cochran |
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"Exploring Galactic Chemical and Dynamical Evolution: Pre and Post SDSS-III/APOGEE" Texas Christian University host: Chris Sneden |
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"Understanding Galaxy Clusters, the Most Massive Objects in the Universe" University of Texas, Dallas host: Karl Gebhardt |
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"Galaxy Formation: Physics and Numerics" University of California, San Diego host: Karl Gebhardt |
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"Ultrahigh Energy Cosmic Rays, Pulsars, and Supernovae" Institut d'Astrophysique de Paris host: Milos Milosavljevic |
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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