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For refcode 1994ApJ...428...43M:
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Copyright by American Astronomical Society. Reproduced by permission
1994ApJ...428...43M THE LUMINOSITY FUNCTION OF THE CfA REDSHIFT SURVEY R. O. MARZKE, J. P. HUCHRA, AND M. J. GELLER Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 Received 1993 September 16; accepted 1993 December 8 ABSTRACT We use the CfA Redshift Survey of galaxies with m_z_ < 15.5 to calculate the galaxy luminosity function over the range -13<= M_Z_ <= - 22. The sample includes 9063 galaxies distributed over 2.1 Sr. For galaxies with velocities cz >= 2500 km s^-1^, where the effects of peculiar velocities are small, the luminosity function is well represented by a Schechter function with parameters phi}_*_ = 0.04 +/- 0.01 Mpc^-3^, M_*_ = - 18.8 +/- 0.3 and {alpha} = - 1.0 +/- 0.2. When we include all galaxies with cz >= 500 km s^-1^, the number of galaxies in the range -16 <= M_Z_ <= -13 exceeds the extrapolation of the Schechter function by a factor of 3.1 +/- 0.5. This faint-end excess is not caused by the local peculiar velocity field but may be partially explained by small scale errors in the Zwicky magnitudes. Even with a scale error as large as 0.2 mag mag^-1^, which is unlikely, the excess is still a factor of 1.8 +/- 0.3. If real, this excess affects the interpretation of deep counts of field galaxies. Subject headings: galaxies: distances and redshifts - galaxies: evolution - galaxies: luminosity function, mass function
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