The OiiLuminosity Density of the Universe | Zendy

David W. Hogg | Zendy; Judith G. Cohen | Zendy; R. D. Blandford | Zendy; M. A. Pahre | Zendy

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The OiiLuminosity Density of the Universe

Author(s) -

David W. Hogg,

Judith G. Cohen,

R. D. Blandford,

M. A. Pahre

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/306122

Subject(s) - physics , redshift , astrophysics , galaxy , luminosity , luminosity function , universe , redshift survey , astronomy , star formation , spectral line , line (geometry) , hubble deep field , geometry , mathematics

Equivalent widths of [OII] 3727 A lines are measured in 375 faint galaxyspectra taken as part of the Caltech Faint Galaxy Redshift Survey centered onthe Hubble Deep Field. The sensitivity of the survey spectra to the [OII] lineis computed as a function of magnitude, color and redshift. The luminosityfunction of galaxies in the [OII] line and the integrated luminosity density ofthe Universe in the [OII] line are computed as a function of redshift. It isfound that the luminosity density in the [OII] line was a factor of ~10 higherat redshifts z~1 than it is at the present day. The simplest interpretation isthat the star formation rate density of the Universe has declined dramaticallysince z~1.Comment: accepted for publication in Ap

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