Evidence of an infrared luminosity indicator for galaxies

Details Evidence of an infrared luminosity indicator for galaxies Evidence of an infrared luminosity indicator for galaxies

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...319l..51f&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 319, Aug. 15, 1987, p. L51-L55.

Astronomy and Astrophysics

Astronomy

14

Far Infrared Radiation, Infrared Astronomy, Luminosity, Markarian Galaxies, Red Shift, Spiral Galaxies, Infrared Astronomy Satellite, Radiant Flux Density, Starburst Galaxies, Stellar Evolution

Scientific paper

To elucidate the nature of infrared-luminous galaxies discovered with the IRAS satellite, the authors compare the optical and infrared luminosities of 1161 Markarian galaxies and 2146 "normal" galaxies from the CfA redshift survey. Survival analysis statistical methods that take upper limits fully into account are used. It is found that LIR/LB is statistically correlated with L60μm in both samples, though they differ in the distribution at low luminosities. The derived correlation shows that LIR/LB provides an indicator for L60μm. Since galaxies selected in unbiased IRAS surveys will have higher LIR/LB than optically selected galaxies, they are therefore also selected for high L60μm.

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