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arXiv · 0806.0565

Star-forming galaxies in low-redshift clusters: Data and integrated galaxy properties

C. F. Thomas·C. Moss·P. A. James·S. M. Bennett·A. Aragón-Salamanca·M. Whittle
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Abstract

This paper is a continuation of an ongoing study of the evolutionary processes affecting cluster galaxies. Both CCD R band and H alpha narrow-band imaging was used to determine photometric parameters (m_(r), r_(24), H alpha flux and equivalent width) and derive star formation rates for 227 CGCG galaxies in 8 low-redshift clusters. The galaxy sample is a subset of CGCG galaxies in an objective prism survey of cluster galaxies for H alpha emission. It is found that detection of emission-line galaxies in the OPS is 85%, 70%, and 50% complete at the mean surface brightness values of 1.25 x 10^(-19), 5.19 x 10^(-20), and 1.76 x 10^(-20) W m^(-2) arcsec^(-2), respectively, measured within the R band isophote of 24 mag arcsec^(-2) for the galaxy. The CCD data, together with matched data from a recent H alpha galaxy survey of UGC galaxies within 3000 km s^(-1), will be used for a comparative study of R band and H alpha surface photometry between cluster and field spirals.

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C. F. Thomas, C. Moss, P. A. James, S. M. Bennett, A. Aragón-Salamanca, M. Whittle. 2008-06-03. Star-forming galaxies in low-redshift clusters: Data and integrated galaxy properties. https://doi.org/10.1051/0004-6361:20078806

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