Nearby Gas-Rich Low Surface Brightness Galaxies

Details Nearby Gas-Rich Low Surface Brightness Galaxies Nearby Gas-Rich Low Surface Brightness Galaxies

2000-02-03

arxiv.org/abs/astro-ph/0002080v1

Astronomy and Astrophysics

Astrophysics

12 page, 2 figures, to appear in ApJ

Scientific paper

10.1086/308368

We examine the Fisher-Tully cz<1000 km/s galaxy sample to determine whether it is a complete and representative sample of all galaxy types, including low surface brightness populations, as has been recently claimed. We find that the sample is progressively more incomplete for galaxies with (1) smaller physical diameters at a fixed isophote and (2) lower HI masses. This is likely to lead to a significant undercounting of nearby gas-rich low surface brightness galaxies. However, through comparisons to other samples we can understand how the nearby galaxy counts need to be corrected, and we see some indications of environmental effects that probably result from the local high density of galaxies.

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