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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3474
DTSTART:20141016T203000Z
DTEND:20141016T220000Z
DTSTAMP:20240329T154940Z
LAST-MODIFIED:20140915T151657Z
LOCATION:4421 Sterling Hall
SUMMARY:The Interstellar Medium in M31 - Small-Scale Processes in an E
xtragalactic Context \, Astronomy Colloquium\, Karin Sandstrom\, Unive
rsity of Arizona
DESCRIPTION:As the nearest metal-rich\, star-forming galaxy to the Mil
ky Way\, M31 plays a key role in understanding the interstellar medium
(ISM) and star formation at z~0. Because of its proximity\, we can st
udy the properties of the ISM on the scale of individual star-forming
molecular clouds and characterize the stellar sources of energy input
for the ISM gas and dust. Recent observations have emphasized the imp
ortance cloud-scale processes in setting the efficiency of star format
ion. In particular\, the formation of bound molecular clouds out of t
he cold neutral medium is a critical step in the process. Small spati
al scale processes are also crucial for generating the tracers of star
formation we use to study distant galaxies. M31 is currently the only
metal-rich galaxy where existing observational facilities let us prob
e these important scales in all of the relevant tracers. Towards that
end\, we have assembled a powerful multi-wavelength observational data
set for a large portion of the disk of M31 - including HI 21-cm and ra
dio continuum mapping from the VLA\, CO J=(1-0) mapping from CARMA\, S
pitzer and Herschel photometry\, Herschel spectroscopy\, optical integ
ral field spectroscopy\, and resolved stellar photometry from the Pan-
chromatic Hubble Andromeda Treasury (PHAT). I will summarize what we
have learned about the connection between star formation and the ISM f
rom this unique dataset.
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URL:https://www.physics.wisc.edu/events/?id=3474
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