NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-23 T06:18:47 PDT
Help | Comment | NED Home

For refcode 1988AJ.....96...73T:
Retrieve 90 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
1988AJ.....96...73T THE GALAXY LUMINOSITY FUNCTION AND ENVIRONMENTAL DEPENDENCIES R. BRENT TULLY Institute for Astronomy, University of Hawaii, Honolulu, Hawaii 96822 Received 27 October 1987- revised 21 March 1988 ABSTRACT There is a discussion of three topics that are connected with the Nearby Galaxies Atlas and Nearby Galaxies Catalog. The sample contained in the catalog is used to determine the galaxy luminosity function. A Schechter formulation with M^*^= -20.18+1.25(1 + {alpha}) + 5 log h_75_ and {alpha} = -1.0 is advocated. Then, an empirical equation is derived that describes incompletion as a function of distance in the sample. Finally, there is discussion of the local density parameter and the correlation between galaxy morphology and local density. The catalog sample is suitable for a study of correlations at very low densities. Classed by morphology, galaxies of types Sd-Im tend to lie in the lowest-density regions, and classed by luminosity, galaxies fainter than -18 tend to lie in the lowest-density regions. However, within the gas-rich types, correlations with local density are subtle and probably weaker than anticipated by some theories of galaxy formation.
Retrieve 90 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home