Internal absorption in spiral galaxies

Details Internal absorption in spiral galaxies Internal absorption in spiral galaxies

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..251c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 2, Sept. 15, 1992, p. 251-256.

Astronomy and Astrophysics

Astronomy

22

Astronomical Photometry, Cosmic Dust, Interstellar Matter, Spiral Galaxies, Astronomical Models, Galactic Radiation, Infrared Astronomy Satellite

Scientific paper

Internal absorption in spiral galaxies is statistically determined by examining the projected surface brightness on the basis of a sample of 15,000 faint spiral galaxies. Analysis with different disk models yield small absorption values. For a more realistic three-component model, a central face-on optical depth of 7 is obtained, which is in agreement with suggestions that spiral galaxies are not optically thin.

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