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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-8252
DTSTART:20230420T203000Z
DTEND:20230420T213000Z
DTSTAMP:20260414T053000Z
LAST-MODIFIED:20230410T124108Z
LOCATION:4421 Sterling Hall
SUMMARY:Mapping the circumgalactic medium with Lyα emission\, Astrono
 my Colloquium\, Dawn Erb\, University of Wisconsin\, Milwaukee
DESCRIPTION:The circumgalactic medium modulates most of the key proces
 ses of galaxy evolution. Outflows powered by star formation drive gas 
 out of galaxies and into the CGM\, while new fuel for star formation m
 ay be accreted through the CGM\, likely via dense\, cold streams of ga
 s. Ionizing photons that make their way out of the galaxy must also tr
 averse the neutral hydrogen in the CGM. Because Lyα photons resonantl
 y scatter from neutral hydrogen in the halos of galaxies\, observation
 s of Lyα emission can offer constraints on the properties of circumga
 lactic gas. I will present spatially extended integral field spectrosc
 opic observations of Lyα emission in the circumgalactic medium of gal
 axies at z~2 from the Keck Cosmic Web Imager. In combination with new 
 spatially resolved radiative transfer models\, these data enable const
 raints on the kinematics and distribution of neutral hydrogen in the C
 GM on scales of tens of kiloparsecs.
URL:https://www.physics.wisc.edu/events/?id=8252
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