The number counts and infrared backgrounds from infrared-bright galaxies

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185929· OSTI ID:6137222

Hacking, P B; Soifer, B T ^[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), Journal Name: Astrophysical Journal; (USA) Vol. 367; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
ELECTROMAGNETIC RADIATION
ENERGY SPECTRA
GALACTIC EVOLUTION
GALAXIES
INFRARED RADIATION
MATHEMATICAL MODELS
RADIATIONS
RED SHIFT
SATELLITES
SPECTRA
STAR EVOLUTION
UNIVERSE