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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-6735
DTSTART:20211118T213000Z
DTEND:20211118T230000Z
DTSTAMP:20260414T122616Z
LAST-MODIFIED:20211108T212029Z
LOCATION:4421 Sterling Hall\, Coffee and Cookies at 3:30 pm\, Talk sta
rts at 3:45 pm
SUMMARY:Testing Galaxy Formation Models with Large-scale Surveys of th
e Milky Way Stellar Halo\, Astronomy Colloquium\, Emily Cunningham\, F
latiron Research Fellow\, Center for Computational Astrophysics
DESCRIPTION:While the vast majority of the light from our galaxy comes
from the Galactic disk\, the vast majority of the mass of the Milky W
ay (MW) is in its dark matter halo. Because we cannot directly observe
the MW's dark matter halo\, we must use luminous tracer populations t
o study the mass distribution indirectly. Fortunately\, there are star
s strewn throughout the MW's dark matter halo. According to the hierar
chical paradigm for galaxy evolution\, the MW built up its halo of dar
k matter over cosmic time by accreting smaller dwarf galaxies. The rem
nants of these accreted dwarfs make up the MW's stellar halo. Halo sta
rs can therefore be used both to constrain the dark matter distributio
n of the MW as well as inform us about the dwarf galaxies in which the
y formed. I will present my ongoing theoretical and observational work
using halo stars to map the dark matter distribution and disequilibri
um in the MW\, as well as study the faint\, low-mass galaxies that wer
e consumed by the MW during its formation. I will discuss the crucial
roles of current and upcoming large-scale surveys of the MW halo for a
ddressing fundamental questions in galaxy formation.
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\nWe strongly encourage you to attend the colloquium in person. If t
hat is impossible\, it is available over zoom at the following link:
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\nhttps://us02web.zoom.us/j/88024178440?pwd=Sk5tRXdLVWJTc0Rk
UXEwblRaa3RvQT09
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URL:https://www.physics.wisc.edu/events/?id=6735
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