Evidence for an extragalactic component of the far-ultraviolet background and constraints on galaxy evolution for Z between 0.1 and 0.6

Details Evidence for an extragalactic component of the far-ultraviolet background and constraints on galaxy evolution for Z between 0.1 and 0.6 Evidence for an extragalactic component of the far-ultraviolet background and constraints on galaxy evolution for Z between 0.1 and 0.6

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...338..677m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 338, March 15, 1989, p. 677-706.

Computer Science

Sound

43

Background Radiation, Far Ultraviolet Radiation, Galactic Evolution, Intergalactic Media, Spiral Galaxies, Airglow, Hubble Constant, Luminosity, Power Spectra, Red Shift, Star Formation

Scientific paper

A 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.

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