Identification and Morphologies of Galaxies with Old Stellar Populations at z˜2.5

Details Identification and Morphologies of Galaxies with Old Stellar Populations at z˜2.5 Identification and Morphologies of Galaxies with Old Stellar Populations at z˜2.5

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..379..122s&link_type=abstract

Cosmic Frontiers ASP Conference Series, Vol. 379, proceedings of the conference held 31 July-4 August 2006 at Durham University,

Physics

2

Scientific paper

We describe a study of morphologies of galaxies with old stellar populations in radio-source fields at z˜2.5. A significant fraction of these are dominated by disks of old stars, and none we have found so far has the properties of present-epoch ellipticals. Recent Spitzer IRAC data confirms that at least one of our prime examples is definitely not a reddened star-forming galaxy.

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