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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-5218
DTSTART:20191010T203000Z
DTEND:20191010T220000Z
DTSTAMP:20260407T180822Z
LAST-MODIFIED:20190926T171019Z
LOCATION:4421 Sterling Hall\, Coffee and cookies 3:30 PM\, Talk begins
  3:45 PM
SUMMARY:Milky Way Science with the Dark Energy Survey\, Astronomy Coll
 oquium\, Keith Bechtol\, UW Madison Physics Department
DESCRIPTION:The stellar halo of the Milky Way represents only ~1% of t
 he total stellar mass of our Galaxy\, but is rich with clues regarding
  the formation history of the Milky Way\, the properties of the first 
 stars and galaxies\, and the local distribution of dark matter. The cu
 rrent generation of wide-field optical/NIR imaging surveys including S
 DSS\, DES\, Pan-STARRS\, Gaia\, and HSC-SSP has allowed us to catalog 
 more than a billion individually resolved stars out to the Milky Way v
 iral radius and beyond with precise multiband photometry\, proper moti
 ons\, and light curves for variable stars. These datasets\, in combina
 tion with follow-up spectroscopy\, provide new perspectives on the dyn
 amical and chemical history of the Milky Way and its satellites\, and 
 ever more stringent constraints on the fundamental nature of dark matt
 er. I will discuss these topics\, with a focus on recent results from 
 the Dark Energy Survey (DES)\, a 5000 square degree imaging survey of 
 the south Galactic cap to ~24th magnitude in the grizY bands.
URL:https://www.physics.wisc.edu/events/?id=5218
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