Photometric study of polar-ring galaxies. I. UGC 7576 and UGC 9796

Details Photometric study of polar-ring galaxies. I. UGC 7576 and UGC 9796 Photometric study of polar-ring galaxies. I. UGC 7576 and UGC 9796

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...290..693r&link_type=abstract

Astronomy and Astrophysics 290, 693-704 (1994)

Astronomy and Astrophysics

Astrophysics

23

Galaxies: Interactions, Peculiar, Photometry, Ugc 7576, Ugc 9796

Scientific paper

We present the results of B, V, and R_c_ surface photometry of UGC 7576 and UGC 9796 - two well-known polar-ring galaxies (PRGs). Comparison with other kinematically confirmed PRGs with S0 central galaxies yields the following principal results. The PRGs central bodies have the absolute luminosities and colours of normal S0 galaxies; exponential disks of PRGs are significantly brighter and shorter in comparison with the disks of normal S0 galaxies; polar rings have total luminosities and HI mass-to-B luminosity ratios corresponding to normal late-type spiral galaxies; there is an evidence of roughly normal (as in Milky Way) gas-to-dust ratio for rings; there is an active star formation in the polar rings. These results support the standard scenario of PRGs formation as a consequence of galaxy-galaxy interactions.

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