Journal
ASTROPHYSICAL JOURNAL
Volume 632, Issue 2, Pages 831-840Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/444374
Keywords
galaxies : clusters : individual; (IDSCL J0749+1018); galaxies : evolution; galaxies : formation; galaxies : high-redshift
Categories
Ask authors/readers for more resources
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 confirms this interpretation and gives redshifts ranging from 1.335 to 1.338. Four of the galaxies are close together on the sky and less than 3000 from an R 13: 5 star; 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 elliptical galaxies, 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available