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  • Astronomy Department Colloquia
    Death of Massive Stars abstract Christian D Ott California Institute of Technology Caltech host Milos Milosavljevic Feb 12 Tinsley Scholar Asteroseismology with the Kepler Mission abstract Gerald Handler Nicolaus Copernicus Astronomical Center Warsaw hosts Fritz Benedict and Stars Research Group Feb 19 Three Dimensional Simulations of Core Collapse Supernovae abstract Sean Couch University of Chicago host Milos Milosavljevic Craig Wheeler Feb 26 The Dark Ages Radio Explorer DARE abstract Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation abstract Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of Tokyo ICRR hosts Roderik Overzier UT Astronomy Galaxies Research Group Mar 26 Dark Matter in Dwarf Spheroidal Galaxies abstract Anatoly Klypin New Mexico State University host John Kormendy Apr 1 Monday 3 00 pm PhD Defense Presentation Theoretical Studies of Superluminous Supernovae abstract Emmanouil Manos Chatzopoulos University of Texas at Austin Apr 2 Galaxy Star Formation Efficiency from z 0 to z 8 abstract Peter Behroozi Stanford University host Shardha Jogee Apr 9 Bayesian Success Stories in Astronomy abstract James Scott University of Texas at Austin Dept of Information Risk and Operations Management Red McCombs School of Business host Daniel Jaffe Apr 16 New Clues on the Origin of the Astrophysical r Process abstract Richard Boyd Lawrence Livermore National Laboratory National Ignition Facility host Chris Sneden Apr 19 Friday Noon PhD Defense Presentation Metallicities of Anomalous Velocity Gas in the Vicinity of the Milky Way abstract John Barentine University of Texas at Austin Apr 23 The WISP Survey Overview of Recent

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=1 (2014-02-28)
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  • Astronomy Department Colloquia
    Bromm Jan 29 High redshift Gravitationally Lensed Starburst Galaxies Revealed by the South Pole Telescope and ALMA abstract Joaquin D Vieira California Institute of Technology Caltech host Neal Evans Feb 5 The Death of Massive Stars abstract Christian D Ott California Institute of Technology Caltech host Milos Milosavljevic Feb 12 Tinsley Scholar Asteroseismology with the Kepler Mission abstract Gerald Handler Nicolaus Copernicus Astronomical Center Warsaw hosts Fritz Benedict and Stars Research Group Feb 19 Three Dimensional Simulations of Core Collapse Supernovae abstract Sean Couch University of Chicago host Milos Milosavljevic Craig Wheeler Feb 26 The Dark Ages Radio Explorer DARE abstract Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation abstract Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of Tokyo ICRR hosts Roderik Overzier UT Astronomy Galaxies Research Group Mar 26 Dark Matter in Dwarf Spheroidal Galaxies abstract Anatoly Klypin New Mexico State University host John Kormendy Apr 1 Monday 3 00 pm PhD Defense Presentation Theoretical Studies of Superluminous Supernovae abstract Emmanouil Manos Chatzopoulos University of Texas at Austin Apr 2 Galaxy Star Formation Efficiency from z 0 to z 8 abstract Peter Behroozi Stanford University host Shardha Jogee Apr 9 Bayesian Success Stories in Astronomy abstract James Scott University of Texas at Austin Dept of Information Risk and Operations Management Red McCombs School of Business host Daniel Jaffe Apr 16 New Clues on the Origin of the Astrophysical r Process abstract Richard Boyd Lawrence Livermore National Laboratory National Ignition Facility host Chris Sneden Apr 19 Friday

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=2 (2014-02-28)
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  • Astronomy Department Colloquia
    dust can be present in massive galaxies near the end of the epoch of cosmic reionization These sources were additionally targeted with high resolution imaging with ALMA unambiguously demonstrating them to be strongly gravitationally lensed by foreground structure We are undertaking a comprehensive and systematic followup campaign to use these cosmic magnifying glasses to study the infrared background in unprecedented detail inform the condition of the interstellar medium in starburst galaxies at high redshift and place limits on dark matter substructure I will discuss the scientific context and potential for these strongly lensed starburst galaxies give an overview of our team s extensive followup efforts and describe our latest science results close Joaquin D Vieira California Institute of Technology Caltech host Neal Evans Feb 5 The Death of Massive Stars abstract Christian D Ott California Institute of Technology Caltech host Milos Milosavljevic Feb 12 Tinsley Scholar Asteroseismology with the Kepler Mission abstract Gerald Handler Nicolaus Copernicus Astronomical Center Warsaw hosts Fritz Benedict and Stars Research Group Feb 19 Three Dimensional Simulations of Core Collapse Supernovae abstract Sean Couch University of Chicago host Milos Milosavljevic Craig Wheeler Feb 26 The Dark Ages Radio Explorer DARE abstract Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation abstract Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of Tokyo ICRR hosts Roderik Overzier UT Astronomy Galaxies Research Group Mar 26 Dark Matter in Dwarf Spheroidal Galaxies abstract Anatoly Klypin New Mexico State University host John Kormendy Apr 1 Monday 3 00 pm PhD

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=3 (2014-02-28)
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  • Astronomy Department Colloquia
    understanding of core collapse and its range of outcomes Specifically I discuss recent insights gained from new multi dimensional models on the physical mechanism s believed responsible for converting the gravitational energy liberated in collapse into energy of the explosion These models also yield new predictions for the signature of core collapse supernovae in neutrinos and gravitational waves I outline how their observation from the next nearby core collapse event can shed light on properties of the progenitor and the dynamics and thermodynamics of the supernova engine close Christian D Ott California Institute of Technology Caltech host Milos Milosavljevic Feb 12 Tinsley Scholar Asteroseismology with the Kepler Mission abstract Gerald Handler Nicolaus Copernicus Astronomical Center Warsaw hosts Fritz Benedict and Stars Research Group Feb 19 Three Dimensional Simulations of Core Collapse Supernovae abstract Sean Couch University of Chicago host Milos Milosavljevic Craig Wheeler Feb 26 The Dark Ages Radio Explorer DARE abstract Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation abstract Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of Tokyo ICRR hosts Roderik Overzier UT Astronomy Galaxies Research Group Mar 26 Dark Matter in Dwarf Spheroidal Galaxies abstract Anatoly Klypin New Mexico State University host John Kormendy Apr 1 Monday 3 00 pm PhD Defense Presentation Theoretical Studies of Superluminous Supernovae abstract Emmanouil Manos Chatzopoulos University of Texas at Austin Apr 2 Galaxy Star Formation Efficiency from z 0 to z 8 abstract Peter Behroozi Stanford University host Shardha Jogee Apr 9 Bayesian Success Stories in Astronomy

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=4 (2014-02-28)
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  • Astronomy Department Colloquia
    structure of stars by using pulsations as seismic waves This talk reviews some asteroseismic results from Kepler including detections and interpretations of solar like oscillations in hundreds of main sequence stars and in thousands of giants New results on heat driven pulsators are presented and discussed including hybridicity i e the presence of different sets of oscillation spectra in the same star Finally some interesting and curious new findings such as a star pulsating around two different axes tidally driven heartbeat stars or up to relativistic effects in eclipsing binary light curves are presented close Gerald Handler Nicolaus Copernicus Astronomical Center Warsaw hosts Fritz Benedict and Stars Research Group Feb 19 Three Dimensional Simulations of Core Collapse Supernovae abstract Sean Couch University of Chicago host Milos Milosavljevic Craig Wheeler Feb 26 The Dark Ages Radio Explorer DARE abstract Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation abstract Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of Tokyo ICRR hosts Roderik Overzier UT Astronomy Galaxies Research Group Mar 26 Dark Matter in Dwarf Spheroidal Galaxies abstract Anatoly Klypin New Mexico State University host John Kormendy Apr 1 Monday 3 00 pm PhD Defense Presentation Theoretical Studies of Superluminous Supernovae abstract Emmanouil Manos Chatzopoulos University of Texas at Austin Apr 2 Galaxy Star Formation Efficiency from z 0 to z 8 abstract Peter Behroozi Stanford University host Shardha Jogee Apr 9 Bayesian Success Stories in Astronomy abstract James Scott University of Texas at Austin Dept of Information Risk and Operations

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=5 (2014-02-28)
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  • Astronomy Department Colloquia
    elements heavier than iron throughout the universe their importance in galactic chemical evolution cannot be underestimated The first stars expected to be relatively massive likely ended as CCSNe as well These bright events occurring just a couple million years after the Big Bang may be some of the most distant observable objects in the universe with the upcoming James Webb Space Telescope Despite the importance of CCSNe to our understanding of many aspects of the universe the mechanism that reverses stellar core collapse and drives supernova explosions is not fully understood The CCSN mechanism is one of the most important challenges for modern computational astrophysics I will discuss the current state of the art of CCSN theory and simulation with an emphasis on my recent work on three dimensional CCSN simulations I will highlight some of the most interesting and important questions supernova theorists are currently wrestling with in particular the importance of fully three dimensional simulations close Sean Couch University of Chicago host Milos Milosavljevic Craig Wheeler Feb 26 The Dark Ages Radio Explorer DARE abstract Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation abstract Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of Tokyo ICRR hosts Roderik Overzier UT Astronomy Galaxies Research Group Mar 26 Dark Matter in Dwarf Spheroidal Galaxies abstract Anatoly Klypin New Mexico State University host John Kormendy Apr 1 Monday 3 00 pm PhD Defense Presentation Theoretical Studies of Superluminous Supernovae abstract Emmanouil Manos Chatzopoulos University of Texas at Austin Apr 2

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=6 (2014-02-28)
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  • Astronomy Department Colloquia
    and black holes via their impact on the intergalactic medium IGM as measured by the highly redshifted 21 cm hyperfine transition of neutral hydrogen HI DARE will probe redshifts of 11 35 Dark Ages to Cosmic Dawn with observed HI frequencies of 40 120 MHz DARE will observe expected spectral features in the global signal of HI that correspond to stellar ignition Lyman alpha from the first stars coupling with the HI hyperfine transition X ray heating ionization of the IGM from the first accreting black holes and the beginning of reionization signal dominated by IGM ionization fraction We propose to observe these spectral features with a broad beam bi conical dipole antenna along with a receiver and digital spectrometer that has high heritage from the ground based EDGES experiment We will place DARE in lunar orbit and take data only above the farside a location known to be free of human generated RFI and with a negligible ionosphere In this talk I will present the mission concept including initial results from an engineering prototype in Green Bank WV and western Australia which is designed to perform end to end validation of the instrument and our calibration techniques I will also describe our signal extraction tool using a Markov Chain Monte Carlo technique which measures the parameterized spectral features in the presence of substantial Galactic and solar system foregrounds close Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation abstract Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=7 (2014-02-28)
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  • Astronomy Department Colloquia
    Milosavljevic Craig Wheeler Feb 26 The Dark Ages Radio Explorer DARE abstract Jack O Burns University of Colorado Boulder host Craig Wheeler Mar 5 Feedback in Faint Galaxies During the Peak Epoch of Star Formation Because faint low mass galaxies are numerous at high redshifts their impact on the Universe is expected to be significant They may host a substantial fraction of global star formation provide many of the energetic photons needed to reionize the universe and contribute to the enrichment of the intergalactic medium through the expulsion of metals in galactic outflows Because of their faintness however the properties of these galaxies are difficult to determine I will discuss a variety of observations aimed at characterizing the physical conditions in low mass galaxies at redshifts z 2 3 the peak epoch of star formation in the Universe with particular emphasis on the study of galactic outflows in faint galaxies close Dawn Erb University of Wisconsin Milwaukee host Steve Finkelstein Mar 12 Spring Break no talks or classes scheduled this week March 11 15 Mar 19 Tinsley Scholar Reionization History and Physical Processes Indicated from the Census of Galaxies at z 7 abstract Masami Ouchi University of Tokyo ICRR hosts Roderik Overzier UT Astronomy Galaxies Research Group Mar 26 Dark Matter in Dwarf Spheroidal Galaxies abstract Anatoly Klypin New Mexico State University host John Kormendy Apr 1 Monday 3 00 pm PhD Defense Presentation Theoretical Studies of Superluminous Supernovae abstract Emmanouil Manos Chatzopoulos University of Texas at Austin Apr 2 Galaxy Star Formation Efficiency from z 0 to z 8 abstract Peter Behroozi Stanford University host Shardha Jogee Apr 9 Bayesian Success Stories in Astronomy abstract James Scott University of Texas at Austin Dept of Information Risk and Operations Management Red McCombs School of Business host Daniel Jaffe Apr 16

    Original URL path: http://www.as.utexas.edu/calendar/colloq_sp13.html?a=8 (2014-02-28)
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