The polar-ring galaxies NGC 2685 and NGC 3808B (VV 300)

Details The polar-ring galaxies NGC 2685 and NGC 3808B (VV 300) The polar-ring galaxies NGC 2685 and NGC 3808B (VV 300)

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3098..231r&link_type=abstract

In NASA, Marshall Space Flight Center, Paired and Interacting Galaxies: International Astronomical Union Colloquium No. 124 p 23

Astronomy and Astrophysics

Astronomy

5

Cosmic Dust, Intergalactic Media, Peculiar Galaxies, Ring Galaxies, A Stars, Astronomy, Rotation

Scientific paper

Polar-ring galaxies (PRG) are among the most interesting examples of interaction between galaxies. A PRG is a galaxy with an elongated main body surrounded by a ring (or a disk) of stars, gas, and dust rotating in a near-polar plane (Schweizer, Whitmore, and Rubin, 1983). Accretion of matter by a massive lenticular galaxy from either intergalactic medium or a companion galaxy is usually considered as an explanation of the observed structure of PRG. In the latter case there are two possibilities: capture and merging of a neighbor galaxy, and accretion of mass from a companion galaxy during a close encounter. Two PRG formation scenarios just mentioned are illustrated here by the results of our observations of the peculiar galaxies NGC 2685 and NGC 3808B.

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