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Two searches for primeval galaxiesA number of active galaxies are now known at very large redshifts, some of them even have properties suggestive of galaxies in the process of formation. They commonly show strong Ly-alpha emission, at least some of which appears to be ionized by young stars. Inferred star formation rates are in the range approximately = 100-500 solar mass/yr. An important question is: are there radio-quiet, field counterparts of these systems at comparable redshifts? Whereas, we are probably already observing some evolutionary and formative processes of distant radio galaxies, the ultimate goal is to observe normal galaxies at the epoch when most of their stars form. We have, thus, started a search for emission-line objects at large redshifts, ostensibly young and forming galaxies. Our method is to search for strong line emission (hopefully Ly alpha) employing two techniques: a direct, narrow-band imaging search, using a Fabry-Perot interferometer; and a serendipitous long-slit spectroscopic search.
Document ID
19930017525
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thompson, D. (California Inst. of Tech. Pasadena, CA, United States)
Djorgovski, S. (California Inst. of Tech. Pasadena, CA, United States)
Trauger, J. (Jet Propulsion Lab. California Inst. of Tech., Pasadena., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1993
Publication Information
Publication: NASA. Ames Research Center, The Evolution of Galaxies and Their Environment
Subject Category
Astrophysics
Accession Number
93N26714
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19930017517Collected WorksThe Evolution of Galaxies and Their Environment
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