Volume 397, Number 3, January III 2003
|Page(s)||L9 - L12|
|Published online||21 January 2003|
Letter to the Editor
Faint dwarf spheroidals in the Fornax Cluster
A flat luminosity function
Sternwarte der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
2 Departamento de Astronomía y Astrofísica, P. Universidad Católica, Casilla 104, Santiago 22, Chile
Corresponding author: M. Hilker, email@example.com
Accepted: 1 December 2002
We have discovered 70 very faint dwarf galaxies in the Fornax Cluster. These dSphs candidates follow the same magnitude-surface brightness relation as their counterparts in the Local Group, and even extend it to fainter limits. The faintest dSph candidate in our sample has an absolute magnitude of mag and a central surface brightness of mag/arcsec2. There exists a tight color-magnitude relation for the early-type galaxies in Fornax that extends from the giant to the dwarf regime. The faint-end slope of the luminosity function of the early-type dwarfs is flat (), contrary to the results obtained by Kambas et al. (2000).
Key words: galaxies: clusters: individual: Fornax cluster / galaxies: dwarf / galaxies: fundamental parameters / galaxies: luminosity function
© ESO, 2003
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