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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-2659
DTSTART:20120419T203000Z
DTEND:20120419T220000Z
DTSTAMP:20260420T062257Z
LAST-MODIFIED:20120416T152153Z
LOCATION:4421 Sterling Hall
SUMMARY:Infrared-luminous galaxies: their Evolution\, Clustering and F
 ates\, Astronomy Colloquium\, Benjamin Weiner\, Steward Observatory
DESCRIPTION:Infrared-luminous galaxies are powered by star formation o
 r active<br>
\ngalactic nuclei\, but emit much of their light as radia
 tion reprocessed by dust into the far infrared.  The most massive star
 bursts in both the local and high redshift universe are ultraluminous 
 infrared galaxies(L_IR > 1012 Lsun).  This class of galaxies was disco
 vered by IRAS and studied extensively with Spitzer. However\, it remai
 ns controversial what IR-luminous galaxies at z=1 are\, and what they 
 will evolve into.  Are IR-luminous galaxies at high redshift mostly ga
 laxy mergers\, as they are at low redshift?  Are ultraluminous IR gala
 xies strongly clustered\, and can we infer whether they must evolve in
 to cluster galaxies today?  Is star formation in high-z IR-luminous ga
 laxies centrally concentrated or spatially extended?  I will discuss t
 hese questions using data from Spitzer/MIPS\, HST\, and the DEEP2 reds
 hift survey.  I will also show near-infrared slitless spectroscopy fro
 m the WFC3 instrument on Hubble\, and its use as a probe of star-formi
 ng galaxies at high redshifts\, with some application to measuring ext
 inction and the spatial extent of star formation in high-z galaxies.<b
 r>
\n
URL:https://www.physics.wisc.edu/events/?id=2659
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