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Date and Time of the Query: 2019-08-18 T02:28:43 PDT
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For refcode 1995A&A...303..398R:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1995A&A...303..398R Photometric study of polar-ring galaxies II. IC 1689 V.P. Reshetnikov, V.A. Hagen-Thorn, and V.A. Yakovleva Astronomical Institute of St.Petersburg State University, 198904 St.Petersburg, Russia St.Petersburg State University, 198904 St.Petersburg, Russia Received 20 October 1994/Accepted 14 March 1995 Abstract. The results are given of detailed surface B,V, and R_c_ photometry of IC 1689 - a galaxy with an inner polar ring. It is shown that the central galaxy is a normal S0-type galaxy with a relatively short and warped stellar disk. The inner polar ring (its radius is only about 2 kpc) has blue colour (B - V =+0.3, V - R_c_ = +0.3) and comparatively high surface brightness ({mu}_B_ ~ 23.2). Comparison of observed surface brightnesses and colours B - V for all single polar rings studied earlier show that there is a dependence between these characteristics. We interpret this dependence as a consequence of the fact that global bursts of star formation may occur (with a burst strength up to 0.15) in many polar rings in the course of their evolution. Key words: galaxies: interactions; peculiar; photometry; IC 1689
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