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Date and Time of the Query: 2019-05-21 T00:23:26 PDT
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For refcode 1999AJ....118..883P:
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Copyright by American Astronomical Society. Reproduced by permission
1999AJ....118..883P THE LUMINOSITY DISTRIBUTION OF LOCAL GROUP GALAXIES CHRISTOPHER J. PRITCHET Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Victoria, BC V8W 3P6, Canada AND SIDNEY VAN DEN BERGH Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, Victoria, BC V8X 4M6, Canada Received 1999 March 15; accepted 1999 April 15 ABSTRACT From a rediscussion of Local Group membership and of distances to individual galaxies, we obtain M_V_ values for 35 probable and possible Local Group members. The luminosity function of these objects is well fitted by a Schechter function with faint-end slope {alpha} = -1.1 +/- 0.1. The probability that the luminosity distribution of the Local Group is a single Schechter function with {alpha} steeper than -1.3 is less than 1%. However, more complicated luminosity functions, such as multicomponent Schechter functions with steep faint-end slopes, cannot be ruled out. There is some evidence that the luminosity distribution of dwarf spheroidal galaxies in the Local Group is steeper than that of dwarf irregular galaxies. Key words: galaxies: luminosity function, mass function-Local Group
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