The properties of infrared galaxies in the local universe

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

DOI:https://doi.org/10.1086/115691· OSTI ID:5701787

Soifer, B T; Neugebauer, G ^[1]

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1. California Institute of Technology, Pasadena (USA)

The 60-micron selected IRAS Bright Galaxy Sample is used as a starting point to derive additional complete flux-limited samples of extragalactic objects at 12, 25, and 100 microns. With these complete samples the luminosity functions at all IRAS wavelengths are derived for the local universe. These luminosity functions are used to determine the infrared emission of the local universe. The maximum in the energy output of galaxies occurs at 100 microns. The infrared emission of galaxies at 12 and 25 micron represents about 30 percent of the total infrared luminosity in the local universe. The mean infrared colors of infrared selected galaxies vary systematically with infrared luminosity; the ratio S sub nu (60 microns)/S sub nu(100 microns) increases and S sub nu(12 microns)/S sub nu(25 microns) decreases with increasing infrared luminosity. 24 refs.

• OSTI ID: 5701787
• Journal Information: Astronomical Journal; (USA), Vol. 101; ISSN 0004-6256
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXIES
INFRARED RADIATION
COLOR
INTERSTELLAR SPACE
LUMINOSITY
SATELLITES
UNIVERSE
ELECTROMAGNETIC RADIATION
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SPACE
640105* - Astrophysics & Cosmology- Galaxies