Journal article
Morphologies in a Cluster of Extremely Red Galaxies with Old Stellar Populations at z=1.34
The Astrophysical journal, Vol.632(2 I), pp.831-840
06/28/2005
DOI: 10.1086/444374
Abstract
Astrophys.J.632:831-840,2005 We have identified a clustering of red galaxies from deep optical/IR images
obtained as part of the Institute for Astronomy Deep Survey. Photometric
spectral-energy distributions indicate that most of these galaxies comprise
nearly pure old stellar populations at a redshift near 1.4, and Keck
spectroscopy of the three brightest red galaxies confirm this interpretation
and give redshifts ranging from 1.335 to 1.338. Four of the galaxies are close
together on the sky and less than 30" from an R=13.5 star, and we have obtained
deep adaptive-optics imaging of this group. Detailed analysis and modeling of
the surface-brightness profiles of these galaxies shows that two are normal
ellipticals, one is an S0, and one appears to be an essentially pure disk of
old stars, with no significant bulge. All four are highly relaxed, symmetric
systems. While the old, bulgeless disk galaxy represents a type that is rare at
the present epoch, the other three galaxies have structural parameters that are
essentially indistinguishable from those of present-day galaxies and differ
only in the age of their stellar populations.
Details
- Title: Subtitle
- Morphologies in a Cluster of Extremely Red Galaxies with Old Stellar Populations at z=1.34
- Creators
- Hai Fu - University of HawaiiAlan Stockton - University of HawaiiMichael Liu - University of Hawaii
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.632(2 I), pp.831-840
- DOI
- 10.1086/444374
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- University of Chicago Press
- Language
- English
- Date published
- 06/28/2005
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199777702771
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