Department of Mathematics, Applied Mathematics and Astronomy, University of South Africa, P.O. Box 392, Pretoria 0003, South Africa e-mail: firstname.lastname@example.org or email@example.com
2 Astronomisches Institut der Westfälischen Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
Send offprint request to: B. Cunow
Accepted: 24 October 1997
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.
Key words: galaxies: spiral / galaxies: photometry
Based on observations collected at the South African Astronomical Observatory, Sutherland, Republic of South Africa.
The profile data used for Figs. 1a to 1n are available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (220.127.116.11) or via http://cdsweb.u-strasbg.fr/Abstract.html
© European Southern Observatory (ESO), 1998