M_1 - M* Correlation in Galaxy Clusters

Details M_1 - M* Correlation in Galaxy Clusters M_1 - M* Correlation in Galaxy Clusters

1994-07-15

arxiv.org/abs/astro-ph/9407047v1

Astronomy and Astrophysics

Astrophysics

4 pages, postscript with 3 figures, in press : proc. XXIXth Rencontres de Moriond "Clusters of Galaxies"

Scientific paper

Photographic F band photometry of a sample of 36 Abell clusters has been used to study the relation between the magnitude $M_1$ of the brightest cluster member and the Schechter function parameter $M^*$. Clusters appear segregated in the $M_1$-$M^*$ plane according to their Rood \& Sastry class. We prove on a statistical basis that on average, going from early to late RS classes, $M_1$ becomes brighter while $M^*$ becomes fainter. The result agrees with the predictions of galactic cannibalism models, never confirmed by previous analyses.

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