The internal extinction in spiral galaxies

Details The internal extinction in spiral galaxies The internal extinction in spiral galaxies

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...391..617h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 391, no. 2, June 1, 1992, p. 617-622.

Astronomy and Astrophysics

Astrophysics

35

Astronomical Photometry, Charge Coupled Devices, Interstellar Extinction, Interstellar Matter, Spiral Galaxies, Brightness, Cosmic Dust, Isophotes

Scientific paper

Using the results of CCD surface photometry for a sample of 284 spiral galaxies, the problem of internal extinction is reinvestigated. Empirical formulas for the face-on correction of isophotal diameter, the I-band magnitude, and the V-I color are derived. It is pointed out that the integrated absorption in a galaxy does not follow the extinction law that applies to individual stars in the galaxy, a simple fact which has been overlooked by many investigators.

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