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

2007-02-05

arxiv.org/abs/astro-ph/0702130v1

Astronomy and Astrophysics

Astrophysics

To be published in the proceedings of the Durham "Cosmic Frontiers" conference, held in August, 2006 (ASP Conference Series)

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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