The most luminous far-infrared extragalactic sources

Details The most luminous far-infrared extragalactic sources The most luminous far-infrared extragalactic sources

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...315...28h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 315, April 1, 1987, p. 28-45.

Astronomy and Astrophysics

Astronomy

133

Astronomical Models, Far Infrared Radiation, Infrared Sources (Astronomy), Spiral Galaxies, Star Formation, Collisions, Galactic Clusters, Interacting Galaxies, Luminosity, Molecular Clouds

Scientific paper

Extremely luminous far-infrared sources are difficult to explain as active sites of star formation, because their ratios of optical-to-infrared luminosities are extremely low. It is shown that brief intervals during which interacting galaxies collide can account for extremely high (≥1011L_sun;) luminosities. The small fraction of the population that exhibits extreme luminosity also roughly equals the fraction of spiral galaxies expected to be observed undergoing collisions at any given time. The authors propose a number of potential tests that would distinguish this model from others.

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