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The Nature of UV-selected Galaxies in the Chandra Deep Field South

Published online by Cambridge University Press:  26 May 2016

D.F. De Mello
Affiliation:
Laboratory for Astronomy and Solar Physics, Code 681, Goddard Space Flight Center, Greenbelt, MD 20771, USA
J. P. Gardner
Affiliation:
Laboratory for Astronomy and Solar Physics, Code 681, Goddard Space Flight Center, Greenbelt, MD 20771, USA
T. Dahlen
Affiliation:
Space Telescope Science Institute, USA
C. J. Conselice
Affiliation:
Caltech, USA
N. A. Grogin
Affiliation:
Space Telescope Science Institute, USA
A. M Koekemoer
Affiliation:
Space Telescope Science Institute, USA

Abstract

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We report the first results of the ongoing survey using HST/WFPC2 (F300W) in parallel with ACS within the Chandra Deep Field South. A sample of 34 objects were identified in the WFPC2 images and their counterparts were found in the ACS images taken by the GOODS team; 6 of them are stars. Galaxies were classified as early-, late-types, and starbursts by template fitting which was also used to determine their photometric redshifts (z< 1). Analysis of the light concentration, asymmetry and clumpiness shows that this sample is a mixed bag, containing dwarf ellipticals, early- and late-spirals, and peculiar objects which resemble mergers in progress. This result has important implications for galaxy evolution since the intermediate redshifts are the epoch when the rise in the volume-averaged star formation rate occurs.

Type
Part 2. Origin
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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