How Do Galaxies in Massive Clusters Form Their Stars?
Kim-Vy Tran
Texas A&M University/University of Zurich
Galaxy clusters are the largest gravitationally bound systems in the
universe and include the most massive galaxies in the universe; this makes
galaxy clusters ideal laboratories for disentangling the nature versus
nurture aspect of how galaxies evolve. Understanding how galaxies form and
evolve in clusters continues to be a fundamental question in astronomy. The
ages and assembly histories of galaxies in rich clusters test both stellar
population models and hierarchical formation scenarios. Is star formation
in cluster galaxies simply accelerated relative to their counterparts in
the lower density field, or do cluster galaxies assemble their stars in a
fundamentally different manner? To answer this question, I review results
from our Spitzer/MIPS Infra-Red Cluster Survey (SMIRCS; 0<1) and present
first results for one of the most distant clusters yet discovered at a
look-back time of nearly 10 billion years (z= 1.62).
Date: | Mardi, le 25 janvier 2011 |
Heure: | 16:00 |
Lieu: | Université McGill |
| Ernest Rutherford Physics Building, R.E. Bell Conference Room (room 103) |
Contact: | Robert Rutledge |
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