Colloquia Schedule Spring 2013
Colloquia are on Tuesdays (unless otherwise indicated) at 3:30 pm in RLM 15.216B
"Probing the Physics of the Dark Universe with Galaxies" Stanford University hosts: Shardha Jogee (Astronomy) & Linda Reichl (Physics) |
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"From Building Blocks to Large Galaxies: Towards Understanding the Formation of the Milky Way" Massachusetts Institute of Technology host: Volker Bromm |
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"High-redshift, Gravitationally Lensed Starburst Galaxies Revealed by the South Pole Telescope and ALMA" California Institute of Technology (Caltech) host: Neal Evans |
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"The Death of Massive Stars" California Institute of Technology (Caltech) host: Milos Milosavljevic |
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Tinsley Scholar "Asteroseismology with the Kepler Mission" Nicolaus Copernicus Astronomical Center, Warsaw hosts: Fritz Benedict, and Stars Research Group |
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"Three-Dimensional Simulations of Core-Collapse Supernovae" University of Chicago host: Milos Milosavljevic & Craig Wheeler |
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"The Dark Ages Radio Explorer (DARE)" University of Colorado, Boulder host: Craig Wheeler |
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"Feedback in Faint Galaxies During the Peak Epoch of Star Formation" University of Wisconsin, Milwaukee host: Steve Finkelstein |
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Spring Break: no talks or classes scheduled this week (March 11-15). |
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Tinsley Scholar "Reionization History and Physical Processes Indicated from the Census of Galaxies at z~>7" I review the results from our Subaru-Keck deep wide-field survey
that has made the largest sample, to date, of >200 Lya emitters LAEs
at z=6.5-7.31 in a large >1 deg^2 area. The reionization history
is discussed based on the evolution of the luminosity function, clustering, and
Lya line profiles including errors of statistics and cosmic variance robustly
estimated from our large LAE sample. The reionization process is
studied with the Lya emitting galaxy fraction. The evolution of the Lya emitting
galaxy fraction drops from z~6 to 7, and the amplitude of the drop is
larger for faint galaxies than for bright galaxies. These two pieces
of evidence
would indicate that the neutral hydrogen fraction of the intergalactic
medium increases from z~6 to 7 and that the reionization proceeds
from high- to low-density environments, as suggested by an inside-out
reionization model. In the final part of my talk, I introduce our recent
studies of the 2012 Hubble Ultra Deep Field Campaign conducted
by a large international collaboration, and highlight results related
to cosmic reionization. I also touch on our planned survey for about
ten thousand spectroscopically-confirmed LAEs at z~7 covering
a total of 30 deg^2 (0.8 Gpc x 0.8 Gpc) area with the next generation
Subaru prime-focus imager and spectrograph. University of Tokyo, ICRR hosts: Roderik Overzier & UT Astronomy Galaxies Research Group |
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"Dark Matter in Dwarf Spheroidal Galaxies" New Mexico State University host: John Kormendy |
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PhD Defense Presentation "Theoretical Studies of Superluminous Supernovae" Emmanouil "Manos" Chatzopoulos University of Texas at Austin |
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"Galaxy Star Formation Efficiency from z = 0 to z = 8" Stanford University host: Shardha Jogee |
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"Bayesian Success Stories in Astronomy" University of Texas at Austin, Dept. of Information, Risk, and Operations Management, Red McCombs School of Business host: Daniel Jaffe |
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"New Clues on the Origin of the Astrophysical r-Process" Lawrence Livermore National Laboratory/National Ignition Facility host: Chris Sneden |
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PhD Defense Presentation "Metallicities of Anomalous-Velocity Gas in the Vicinity of the Milky Way" University of Texas at Austin |
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"The WISP Survey: Overview of Recent Results for Galaxies in the 1 < z < 2 Redshift Range" University of Minnesota host: Steve Finkelstein |
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Tinsley Scholar "YSOVAR: Mid-Infrared Variations in Young Stars" California Institute of Technology host: Joel Green & UT Astronomy Interstellar Research Group |
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"Repeating Novae and the Origin of SN Ia Events" University of Washington host: Harriet Dinerstein |
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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