The Coma cluster luminosity function

Details The Coma cluster luminosity function The Coma cluster luminosity function

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apl%26c..33..223b&link_type=abstract

Astrophysical Letters and Communications, 1996, vol.33 p.223

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

Based on a new spectroscopic sample (nearly) complete to a magnitude b26.5=18.0, we have derived the luminosity function for the central region of the Coma cluster. We find that a single Schechter function does not provide a good fit to the magnitude distribution up to b26.5=20.0, and a superposition of a Gaussian and a Schechter function is required. A possible interpretation of this result is the existence of two different populations of early-type galaxies in the cluster, one of them being affected by evolutionary processes specific to the cluster environment. This interpretation will be tested on our new photometric sample of Coma cluster galaxies, which is complete to a magnitude V=22.

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