The dustiness, luminosity, and metallicity of galaxies

Details The dustiness, luminosity, and metallicity of galaxies The dustiness, luminosity, and metallicity of galaxies

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...364..444v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 364, Dec. 1, 1990, p. 444-450.

Astronomy and Astrophysics

Astrophysics

27

Abundance, Astronomical Photometry, Cosmic Dust, Galactic Structure, Interstellar Matter, Astronomical Catalogs, Brightness Distribution, Charge Coupled Devices, Metallicity

Scientific paper

B-band CCD images have been obtained of 230 galaxies in and near the Virgo and Ursa Major clusters. A coarse classification of these images shows that the 'dustiness' of late-type galaxies correlates strongly with their luminosity. Luminous spirals are seen to be much dustier than late-type systems of lower luminosity. The reason for this correlation is probably that luminous galaxies are more metal-rich than fainter objects. Systems with Fe/H less than about -1.0 are observed to be essentially dust-free.

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