| Issue |
A&A
Volume 384, Number 1, MarchII 2002
|
|
|---|---|---|
| Page(s) | 72 - 80 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20020006 | |
| Published online | 15 March 2002 | |
Surface photometry of new nearby dwarf galaxies *,**
1
Special Astrophysical Observatory of the Russian Academy of Sciences, Nizhnij Arkhyz 369167, Karachaevo-Cherkessia, Russia e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
; This email address is being protected from spambots. You need JavaScript enabled to view it.
2
Isaac Newton Institute of Chile, SAO Branch, Russia
3
Max-Plank-Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
4
Astronomical Institute, St. Petersburg State University, 198904 St. Petersburg, Russia e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Corresponding author: L. N. Makaova, This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
29
August
2001
Accepted:
19
December
2001
Abstract
We present CCD surface photometry of 16 nearby dwarf galaxies, many of
which were only recently discovered. Our sample is comprised of 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
. The central surface brightness ranges from
22.5 to 27.0 mag arcsec-2.
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.
Key words: galaxies: dwarf / galaxies: photometry / galaxies: fundamental parameters / galaxies: irregular / galaxies: evolution
Based on observations obtained with the Apache Point Observatory 3.5-meter telescope, which is owned and operated by the Astrophysical Research Consortium.
Figure 1 is only available in electronic form at http://www.edpsciences.org
© ESO, 2002
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