The luminosity function and mass function of the Virgo cluster.

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Clusters Of Galaxies: Luminosity Function, Clusters Of Galaxies: Mass Function, Clusters Of Galaxies: Virgo

Scientific paper

Studies of the luminosity function and mass function in the central 6 degree region of the Virgo cluster are presented. It is shown that the luminosity function in this region is of Schechter type for all members, Gaussian for the S-type galaxies, where the positions of the peaks seem to move to the faint end and the widths increase along the sequence Sa→Sd. The mass function of the cluster can be well described using a power law just the same as that of stars. Mass and morphology segregation are discussed on the basis of luminosity function and mass function. The total luminosity in this region of the cluster is also presented.

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