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 galaxies^,

B. Cunow

Send offprint request: B. Cunow

  Department of Mathematics, Applied Mathematics and Astronomy, University of South Africa, P.O. Box 392, Pretoria 0003, South Africa
e-mail: cunowbhl@risc5.unisa.ac.za or cunowbhl@alpha.unisa.ac.za
  Astronomisches Institut der Westfälischen Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany

Abstract:

Profiles of surface brightness, ellipticity and position angle obtained from CCD-BVRI images are presented for a sample of 14 spiral galaxies with . 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 , and show a systematic increase with increasing apparent ellipticity. The maximum variation is found for which is larger for edge-on galaxies than for face-on galaxies.

keywords: galaxies: spiral -- galaxies: photometry

• 1. Introduction
• 2. The data
• 3. Results
• References