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" 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" The sensitivity of the Infrared Spectrograph on the Spitzer
Space Telescope has made it possible to trace the production
of dust by individual evolved stars out to distances as great
as 250 kpc. Most evolved stars outside of the Milky Way are
carbon stars, and each galaxy presents a unique combination
of star-formation history and metallicity history. We have
found that down to metallicities of one tenth Solar, the
initial abundances of a carbon star have little impact on the
dust we observe. Below that metallicity, less dust is
produced in carbon stars with more primitive initial
abundances. Analyzing the expected C/O ratios as a function
of metallicity points to the quantity of carbon atoms unbound
to CO as the trigger for the final superwind phase of a
star's life on the asymptotic giant branch. 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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