The effect of inclination-dependent selection on IRAS galaxy detection rates

Details The effect of inclination-dependent selection on IRAS galaxy detection rates The effect of inclination-dependent selection on IRAS galaxy detection rates

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...370..140c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 370, March 20, 1991, p. 140-143.

Astronomy and Astrophysics

Astronomy

1

Galactic Structure, Infrared Sources (Astronomy), Spaceborne Astronomy, Spiral Galaxies, Brightness Distribution, Infrared Astronomy Satellite, Optical Thickness

Scientific paper

The suggestion by Burstein and Lebofsky (1986) that Sc spiral galaxies are optically thick at 100 microns, when viewed edge-on, is investigated. Having examined the inclination dependence of the 100-micron surface brightness and 100 to 60 microns color for a sample of UGC Sc spirals, no evidence is found to support large optical depth at 100 microns. By comparing the inclination distribution of these Sc spirals with a random distribution, an excess of edge-on spirals is noted and interpreted as a systematic misclassification of edge-on spirals as Sc and an increase in diameter with inclination in the UGC. There is no evidence to support the notion that edge-on Sc galaxies are optically thick at 100 microns.

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