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Title: The number counts and infrared backgrounds from infrared-bright galaxies

Journal Article · · Astrophysical Journal; (USA)
DOI:https://doi.org/10.1086/185929· OSTI ID:6137222
;  [1]
  1. JPL, Pasadena, CA (USA) California Institute of Technology, Pasadena (USA)

Extragalactic number counts and diffuse backgrounds at 25, 60, and 100 microns are predicted using new luminosity functions and improved spectral-energy distribution density functions derived from IRAS observations of nearby galaxies. Galaxies at redshifts z less than 3 that are like those in the local universe should produce a minimum diffuse background of 0.0085, 0.038, and 0.13 MJy/sr at 25, 60, and 100 microns, respectively. Models with significant luminosity evolution predict backgrounds about a factor of 4 greater than this minimum. 22 refs.

OSTI ID:
6137222
Journal Information:
Astrophysical Journal; (USA), Vol. 367; ISSN 0004-637X
Country of Publication:
United States
Language:
English