Astronomy 386S - Spring 2015
Seminar in Extragalactic Astronomy
Th 3:30 · RLM 15.216B · Not for credit Spring 2015
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Date
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Speaker
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Title
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Jan 15
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Peter Erwin
MPE, Garching, Germany
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SPECIAL PRESENTATION: "Composite Bulges: The Coexistence of Classical Bulges and Disky Pseudobulges in Disk Galaxies" (host: Eva Noyola)
I will discuss a recent study of several nearby S0 and spiral galaxies,
for which a combination of imaging data, spectroscopy, and dynamical
modeling reveals two distinct central stellar components: a disklike,
kinematically cool pseudobulge *and* an embedded spheroidal,
kinematically hot "classical" bulge. This means that pseudobulges, which
are usually supposed to form via internal secular evolution, and
classical bulges, usually thought to form from rapid mergers, are not
mutually exclusive phenomena: some galaxies can have both. Preliminary
evidence suggests that in such galaxies, supermassive black holes are
correlated with the mass of the classical bulge, not the pseudobulge. I
will also discuss progress from recent simulations in which large-scale
nuclear disks form from bar-driven gas inflow; these agree well with the
observed pseudobulge components.
close
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Jan 22
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Shardha Jogee
University of Texas at Austin
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Organizational meeting.
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Jan 29
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Yi-Kuan Chiang
University of Texas at Austin
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"Surveying Galaxy Proto-clusters in Emission: A Large-scale Structure at z=2.44 and the outlook for HETDEX"
abstract
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Feb 5
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John Feldmeier
Youngstown State University
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"Observational Studies of Intracluster and Intragroup Light and how HETDEX will help"
abstract
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Feb 12
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Peter Behroozi
Space Telescope Science Institute
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Special Colloquium: "Insights into Galaxy Formation from z =15 to the Present Day"
abstract
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Feb 19
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Desika Narayanan
Haverford College
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Special Colloquium: "Three Problems in Trying to Form Galaxies (and how ISM Physics can Save Us"
abstract
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Feb 26
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Gail Zasowski
Johns Hopkins University
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Special Colloquium: "New Tools for Galactic Archaeology from the Milky Way"
abstract
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Mar 5
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No talk scheduled
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Mar 12
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Christina Thompson
Northrop Grumman
Joel Green
Space Telescope Science Institute
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"Webb Telescope Briefing"
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Mar 19
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No talk scheduled. Spring Break: March 16-20.
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Mar 26
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Speaker: TBA
Affiliation: TBD
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"Title: TBA"
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Apr 2
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Speaker: TBA
Affiliation: TBD
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"Part of High z Meeting"
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Apr 9
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Matthew Stevans
University of Texas at Austin
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"Title: TBA"
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Apr 16
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Rebecca Tippens
University of Texas at Austin
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"Title: TBA"
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Apr 23
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Briana Indahl
University of Texas at Austin
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"Title: TBA"
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Apr 30
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John Kormendy
University of Texas at Austin
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"Title: TBA"
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May 7
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Speaker: TBA
Affiliation: TBD
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"Title: TBA"
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