Galaxy evolution at high-redshift: millimeter-wavelength surveys with AzTEC
Kimberly Scott
University of Massachusetts at Amherst
Sub-millimeter/millimeter (sub-mm/mm) selected galaxies (SMGs) are
high-redshift, dust-obscured starburst systems thought to represent an
important phase in the formation of massive galaxies. Their projected
number density as a function of flux density can put tight constraints on
galaxy evolution scenarios; however, most sub-mm/mm surveys have lacked
sufficient area and/or depth to derive accurate number counts of SMGs
over a wide range of flux density. In this talk, I summarize the status
of SMG surveys with AzTEC, a 1.1 mm bolometric camera, taken at the James
Clerk Maxwell Telescope (JCMT) and the Atacama Submillimeter Telescope
Experiment (ASTE). These surveys, which include observations of both
"blank" fields and regions of known galaxy overdensities, represent
the largest (~4 deg^2) and deepest (S1.1mm = 0.5 - 1.5 mJy) set of 1.1
mm observations which have been reduced and analyzed using the same,
well-tested algorithms. This data set has allowed for the first time
accurate measurements of the blank-field differential number counts at
1.1 mm from 0.5 mJy < S1.1mm < 9 mJy. I also summarize the goals of the
AzTEC/ASTE Cluster Environment Survey (ACES) and present preliminary
results from studies of SMGs towards proto-clusters at high-redshift.
Date: | Thursday, 8 January 2009 |
Time: | 11:30 |
Where: | McGill University |
| Ernest Rutherford Physics Building, R.E. Bell Conference Room (room 103) |
|