The reddening of radio elliptical galaxies

Details The reddening of radio elliptical galaxies The reddening of radio elliptical galaxies

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.204.1049s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 204, Sept. 1983, p. 1049-1066. Research supported by th

Astronomy and Astrophysics

Astronomy

10

Elliptical Galaxies, Interstellar Extinction, Radio Galaxies, Spectrum Analysis, Cosmic Dust, Luminosity, Southern Sky, Visible Spectrum

Scientific paper

A comparison of the photometric properties of radio-emitting and radio-quiet elliptical galaxies shows a statistically significant reddening of the radio ellipticals in the case of galaxies whose u-V(0.5), b-V(0.5), and V-r(0.5) KEM optical luminosities are respectively about 0.04, 0.03, and 0.03 mag. Evidence is also found that radio ellipticals display less color scatter. The reddening is interpreted as due to extinction by dust within the radio ellipticals, requiring about 100 million solar masses of gas. This supports the hypothesis that high gas content and nuclear activity are related, and may be accommodated within the framework of galactic wind models.

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