Colloquia Schedule Fall 2012
Colloquia are on Tuesdays (unless otherwise indicated) at 3:30 pm in RLM 15.216B
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"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" One of the great triumphs of cosmology is that we now have a
theoretical understanding of the growth of dark matter structures in
our Universe with sufficient accuracy that the uncertainties no longer
impact significantly on the physics of galaxy formation. This is not the
case for the complex physics that govern the baryons, and so much of
our knowledge of galaxy evolution has and continues to advance because
of observational discoveries. In this talk, I will describe results
from two modern surveys, both using deep, large-area imaging at
near-infrared (1-2 micron) wavelengths, including the Hubble Space
Telescope (CANDELS) and the medium-band imaging survey from the Magellan
Telescope (zFourGE). A critical epoch for galaxies is 1.5 < z < 3.5,
where star-formation activity peaks and many of the family scaling
relations are established. The size and depth (K=25 AB mag) of
these modern surveys now allows us to measure with high accuracies the
distances (from greatly improved photometric redshifts), structure
properties, stellar masses, and star-formation rates for galaxies at
this critical epoch. I will use the data from these modern surveys
to constrain the formation of disk galaxies like the Milky Way both at
z > 1 and from z=1 to the present day. I will discuss correlations
between star-formation activity and morphology in distant galaxies,
including constraints on environmental influences at z~1.5-2. I will
also describe searches with these data for rare objects, including z~7
candidates and very late-type Galactic brown dwarfs. Lastly, I will
discuss ongoing and future research to understand the "formation
epoch" of galaxies, where the ultimate goal is to form a coherent
physical theory for galaxy formation. 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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