Testing Environmental Influences on Star Formation with a Sample of LSB Dwarf Galaxies in the Virgo Cluster

Details Testing Environmental Influences on Star Formation with a Sample of LSB Dwarf Galaxies in the Virgo Cluster Testing Environmental Influences on Star Formation with a Sample of LSB Dwarf Galaxies in the Virgo Cluster

1998-11-03

arxiv.org/abs/astro-ph/9811047v1

Astronomy and Astrophysics

Astrophysics

8 pages, LaTeX. To Appear in the proceeding of the IAU colloquium 171, "THE LOW SURFACE BRIGHTNESS UNIVERSE", held in July 199

Scientific paper

We analyze the star formation activity of an homogeneous LSB dwarf galaxy sample in the Virgo cluster, as a function of the radial velocity relative to the cluster mean velocity and the projected distance from the center of the cluster, using CCD images obtained at the Wise Observatory. The localized H$\alpha$ emission in the HII regions of this sample is compared to that of an isolated gas-rich sample of LSB dwarf galaxies and that of a representative sample of Blue Compact Dwarf (BCD) galaxies in the cluster. We report preliminary results on the LSB dwarf star formation histories obtained from surface color distribution.

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