<< October 2019 >>
 
 >>
 >>
 >>
 >>
 >>
Sun Mon Tue Wed Thu Fri Sat
   1   2   3   4   5 
 6   7   8   9   10   11   12 
 13   14   15   16   17   18   19 
 20   21   22   23   24   25   26 
 27   28   29   30   31   
 
Add an Event Edit This Event

This Week at Physics

<< Spring 2019 Fall 2019 Spring 2020 >>
Subscribe to receive email announcements of events

Event Number 5218

  Thursday, October 10th, 2019

Astronomy Colloquium
“Milky Way Science with the Dark Energy Survey”
Time: 3:30 pm
Place: 4421 Sterling Hall, Coffee and cookies 3:30 PM, Talk begins 3:45 PM
Speaker: Keith Bechtol, UW Madison Physics Department
Abstract: The stellar halo of the Milky Way represents only ~1% of the 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 current generation of wide-field optical/NIR imaging surveys including SDSS, DES, Pan-STARRS, Gaia, and HSC-SSP has allowed us to catalog more than a billion individually resolved stars out to the Milky Way viral radius and beyond with precise multiband photometry, proper motions, and light curves for variable stars. These datasets, in combination with follow-up spectroscopy, provide new perspectives on the dynamical and chemical history of the Milky Way and its satellites, and ever more stringent constraints on the fundamental nature of dark matter. 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.
Add this event to your calendar

©2013 Board of Regents of the University of Wisconsin System