The Westerbork HI survey of spiral and irregular galaxies^*

II. R-band surface photometry of late-type dwarf galaxies

¹ Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
² Dept. of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Str., Baltimore, MD 21218, USA
³ Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
⁴ Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain

Received: 3 August 2001
Accepted: 19 March 2002

Abstract

R-band surface photometry is presented for 171 late-type dwarf and irregular galaxies. For a subsample of 46 galaxies B-band photometry is presented as well. We present surface brightness profiles as well as isophotal and photometric parameters including magnitudes, diameters and central surface brightnesses. Absolute photometry is accurate to 0.1 mag or better for 77% of the sample. For over 85% of the galaxies the radial surface brightness profiles are consistent with published data within the measured photometric uncertainty. For most of the galaxies in the sample  data have been obtained with the Westerbork Synthesis Radio Telescope. The galaxies in our sample are part of the WHISP project (Westerbork  Survey of Spiral and Irregular Galaxies), which aims at mapping about 500 nearby spiral and irregular galaxies in . The availability of  data makes this data set useful for a wide range of studies of the structure, dark matter content and kinematics of late-type dwarf galaxies.