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Morphology classification of galaxies in CL 0939+4713 using a ground-based telescope image
Fukugita, M.; Doi, M.; Dressler, A.; Gunn, J. E.
AA(Institute for Advanced Study, Princeton, NJ, US), AB(Institute for Advanced Study, Princeton, NJ, US), AC(The Observatoires of the Carnegie Inst. of Washington, Pasadena, CA, US), AD(The Observatoires of the Carnegie Inst. of Washington, Pasadena, CA, US)
The Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 439, no. 2, p. 584-587 (ApJ Homepage)
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NASA/STI Keywords:
Classifications, Galactic Clusters, Image Analysis, Morphology, Brightness, Color, Data Reduction, Density (Number/Volume)
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Morphological classification is studied for galaxies in cluster CL 0939+4712 at z = 0.407 using simple photometric parameters obtained from a ground-based telescope image with seeing of 1-2 arcseconds full width at half maximim (FWHM). By ploting the galaxies in a plane of the concentration parameter versus mean surface brightness, we find a good correlation between the location on the plane and galaxy colors, which are known to correlate with morphological types from a recent Hubble Space Telescope (HST) study. Using the present method, we expect a success rate of classification into early and late types of about 70% or possibly more.

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