The color of the inner regions of Seyfert galaxies compared with normal galaxies

Details The color of the inner regions of Seyfert galaxies compared with normal galaxies The color of the inner regions of Seyfert galaxies compared with normal galaxies

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pazh...15..963z&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 15, Nov. 1989, p. 963-970. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

Color-Color Diagram, Seyfert Galaxies, Stellar Color, Electrophotometry, Galactic Nuclei

Scientific paper

For homogeneous samples of 57 Seyfert and 79 normal galaxies, the (U-B)0 and (B-V)0 color indices are determined for inner regions in rings with a mean radius of about 4 kpc. It is found that the E/S0-Sbc-type Seyfert galaxies are bluer in (U-B)0 than similar normal galaxies. The position of Seyfert galaxy rings on a two-color diagram reveals larger scattering and a more systematic shift of points compared with the normal color sequence of galaxies. It is suggested that these peculiarities are related to bursts of star formation and, in some objects, to large (B-V) color excesses in the inner part of the galaxy.

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