Mathematics – Logic
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.6304r&link_type=abstract
American Astronomical Society Meeting 205, #63.04; Bulletin of the American Astronomical Society, Vol. 36, p.1450
Mathematics
Logic
Scientific paper
We combine data from the Infrared Array Camera on the Spitzer Space Telescope, WFPC2 on the Hubble Space Telescope, and the DEEP redshift surveys to examine the morphologies of infrared-bright galaxies in the Groth Strip. Our sample includes 778 galaxies with redshifts up to z 1.7. We examine the IRAC colors as a function of redshift for different morphological types, parameterized by the optical bulge/disk ratio. While the general agreement with galaxy template predictions is good, the IRAC colors are not precise enough to serve as primary indicators of morphological type for galaxies at high redshifts. A few galaxies with high bulge fractions have surprisingly red IR colors but appear to be a heterogeneous group. We compute bolometric IR luminosities and examine the properties of the LIRGs (LIR>1010 L&sun;), which we find are not restricted to any redshift or bulge fraction.
This research was supported through the SAO Summer Intern Program with a grant from the National Science Foundation and is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407.
Ashby Matthew L. N.
Barmby Pauline
Fazio Giacomo
Huang Sheng-Jun
Roscioli M.
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