Integrated far-infrared background from galaxies

Journal Article · Sat Jun 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170136· OSTI ID:5318066

Wang, Boqi ^[1]

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1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA) California, University, Berkeley (USA)

The integrated radiation from galaxies is calculated at far-IR and submillimeter wavelengths. The peak of the far-IR background radiation is 100-130 microns, and its total energy content is 0.5-6 percent of the cosmic microwave background (CMB). At wavelengths longward of 400 microns, the CMB dominates over the far-IR radiation from galaxies in intensity. The autocorrelation of fluctuations from the average angle of the far-IR background of galaxies is calculated. The contribution of galaxies to the anisotropy of the background radiation at wavelengths longer than about 400 microns where the CMB is predominant is obtained. It is found that, in general, earlier galaxy formation predicts stronger far-IR background radiation. The prompt initial enrichment model for the chemical evolution of disk galaxies, in particular those with an exponential star formation rate, produces much larger intensity of the integrated radiation than the accretion model. 55 refs.

• OSTI ID: 5318066
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 374; 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
CORRELATIONS
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
GALACTIC EVOLUTION
GALAXIES
INFRARED RADIATION
MATHEMATICAL MODELS
MICROWAVE RADIATION
RADIATIONS
RELICT RADIATION
SATELLITES