Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..381..327m&link_type=abstract
The Second Annual Spitzer Science Center Conference: Infrared Diagnostics of Galaxy Evolution. ASP Conference Series, Vol. 381,
Astronomy and Astrophysics
Astronomy
Scientific paper
At present, most investigations of high redshift star formation using Spitzer (or ISO) mid-IR data adopt mid- to far-IR correlations derived from local galaxy samples. Direct tests of these correlations at high redshift are scarce. In fact, IR galaxies at high z may have spectral energy distributions that differ significantly from those of local galaxies, rendering a simple redshifting of local IR SED's inappropriate. The Great Observatories Origins Deep Survey, with its multi-wavelength data set, allows for the comparison of high redshift IR galaxies with local galaxies. More specifically, the work presented here uses recently obtained VLA radio data and MIPS 24μ m data to derive the relation between 12μ m emission and the bolometric IR luminosity (L_{IR}) for a large sample of galaxies at z ˜ 1. Locally, a well-defined tight correlation is known to exist, however at z of 1 there appears to be evidence for a population of IR galaxies that does not adhere to this relationship. These proceedings presents these results, along with a discussion of the nature of IR galaxies at z ˜ 1, and the validity of using model SED's derived from local IR galaxies at higher redshifts.
Dickinson Mark Everett
MacDonald Emily C.
Morrison Glenn Evan
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