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SUMMARY:Galaxies Viewed as Collections of Individual Stars - Julianne Dalc
 anton\, University of Washington
DTSTART:20120308T163000Z
DTEND:20120308T173000Z
UID:TALK40019@talks.cam.ac.uk
CONTACT:Richard McMahon
DESCRIPTION:In extragalactic astronomy\, we routinely observe galaxies in 
 broad-band filters\, and then interpret the resulting spectral energy dist
 ribution to learn about the galaxies’ masses\, star formation rates\, ag
 es\, and metallicities. The fidelity of this interpretation relies on havi
 ng a detailed understanding of the stellar populations within the galaxy\,
  and on accurately characterizing the luminosities and colors of the billi
 ons of stars which contribute to a galaxy’s light. In this talk I will d
 iscuss several large programs which use the Hubble Space Telescope to reso
 lve millions of the most luminous stars in nearby galaxies. I will highlig
 ht results using near infrared observations\, focusing on implications for
  the evolution of stars and the integrated NIR light of distant galaxies.\
 n\n
LOCATION:Sackler Lecture Theatre\, IoA (tea at 4:00 pm)
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