Surface photometry of new nearby dwarf galaxies
Abstract
We present CCD surface photometry of 16 nearby dwarf galaxies, many of which were only recently discovered. Our sample comprises both isolated galaxies and galaxies that are members of nearby galaxy groups. The observations were obtained in the Johnson B and V bands (and in some cases in Kron-Cousins I). We derive surface brightness profiles, total magnitudes, and integrated colors. For the 11 galaxies in our sample with distance estimates the absolute B magnitudes lie in the range of -10>Mb>-13. The central surface brightness ranges from 22.5 to 27.0 mag/sq.arcsec. Most of the dwarf galaxies show exponential light profiles with or without a central light depression. Integrated radial color gradients, where present, appear to indicate a more centrally concentrated younger population and a more extended older population.
Cite
@article{arxiv.astro-ph/0201234,
title = {Surface photometry of new nearby dwarf galaxies},
author = {L. N. Makarova and I. D. Karachentsev and E. K. Grebel and O. Yu. Barsunova},
journal= {arXiv preprint arXiv:astro-ph/0201234},
year = {2009}
}
Comments
accepted by A&A