A Deep, Wide-Field H-alpha Survey of Nearby Clusters of Galaxies

Details A Deep, Wide-Field H-alpha Survey of Nearby Clusters of Galaxies A Deep, Wide-Field H-alpha Survey of Nearby Clusters of Galaxies

2000-09-01

arxiv.org/abs/astro-ph/0009026v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure. To appear in ASP Conference Series, "Galaxy Disks and Disk Galaxies", J.G. Funes S.J. and E.M. Corsini, eds

Scientific paper

We present a progress report on an ongoing H-alpha imaging survey of nearby clusters of galaxies. Four clusters have been surveyed to date: A1367, A1656, A347 and A569. A preliminary comparison of H-alpha luminosity functions obtained from our imaging survey with those from the prism survey reveals a significant level of incompleteness in the latter. This in turn is due to a combination of insensitivity to low-luminosity emission-line galaxies and to brighter galaxies with weak extended H-alpha emission. The survey has also revealed a unique population of clustered dwarf emission-line objects which may be the results of recent tidal encounters between larger gas-rich galaxies.

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