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Evidence for an extragalactic component of the far-ultraviolet background and constraints on galaxy evolution for z between 0.1 and 0.6A sounding rocket experiment that measured the power spectrum of small-scale fluctuations in the far-UV background is described. Evidence is presented that these fluctuations are the integrated light from distant galaxies. If this result is used as an upper limit to the integrated light from galaxies, it provides a constraint on the mean UV luminosity density in the redshift range between 0.1 and 0.6 of L(gal) less than 7 x 10 to the 7th solar luminosities/Mpc. When compared to estimates of the present UV luminosity density, this places a strong constraint on the far-UV evolution of galaxies in the last one-third of a Hubble time. This constraint can be interpreted as a limit on the average past star formation rate relative to the present if dust obscuration was not significantly greater in the past. An upper limit to the average star formation rate is derived.
Document ID
19890043786
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Martin, Christopher
(California Univ. Berkeley, CA, United States)
Bowyer, Stuart
(California, University Berkeley, United States)
Date Acquired
August 14, 2013
Publication Date
March 15, 1989
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 338
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
89A31157
Funding Number(s)
CONTRACT_GRANT: NGT-05-003-806
CONTRACT_GRANT: NGR-05-003-450
CONTRACT_GRANT: BMFT-WRK-0275-01-OS-078-3
Distribution Limits
Public
Copyright
Other

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