Dwarf Spheroidal Galaxies in the Virgo Cluster

Details Dwarf Spheroidal Galaxies in the Virgo Cluster Dwarf Spheroidal Galaxies in the Virgo Cluster

1998-05-21

arxiv.org/abs/astro-ph/9805287v1

Astronomy and Astrophysics

Astrophysics

4 pages, LateX (uses Moriond style file, included), with four embedded postscript figures, to appear in `Dwarf Galaxies and Co

Scientific paper

We present a study of the smallest and faintest galaxies found in a very deep photographic R band survey of two regions of the Virgo Cluster, totalling 3.2 square degrees, made with the UK Schmidt Telescope. The objects we detect have the same physical sizes and surface brightnesses as Local Group dwarf spheroidal galaxies. The luminosity function of these extremely low luminosity galaxies (down to M_R =~ -11 or about 5 X 10^{-5} L*) is very steep, with a power law slope alpha = -2.2.

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