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A&A Supplement series, Vol. 129, May I 1998, 593-602

Received June 10; accepted October 24, 1997

BVRI surface photometry for a sample of 14 Sb galaxiesgif,gif

B. Cunow tex2html_wrap1365

Send offprint request: B. Cunow

tex2html_wrap1367  Department of Mathematics, Applied Mathematics and Astronomy, University of South Africa, P.O. Box 392, Pretoria 0003, South Africa
e-mail: or
tex2html_wrap1369  Astronomisches Institut der Westfälischen Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany


Profiles of surface brightness, ellipticity and position angle obtained from CCD-BVRI images are presented for a sample of 14 spiral galaxies with tex2html_wrap_inline1333. For these galaxies, exponential disc components were fitted to the profiles. A decrease of disc scalelengths from B to I is found for 13 galaxies, while for one galaxy scalelengths increase from B to I. The scalelength ratios tex2html_wrap_inline1343, tex2html_wrap_inline1345 and tex2html_wrap_inline1347 show a systematic increase with increasing apparent ellipticity. The maximum variation is found for tex2html_wrap_inline1343 which is tex2html_wrap_inline1351 larger for edge-on galaxies than for face-on galaxies.

keywords: galaxies: spiral -- galaxies: photometry

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