CCD photometry of Abell clusters. I - Magnitudes and redshifts for 84 brightest cluster galaxies

D. P. Schneider, J. E. Gunn, J. G. Hoessel

Research output: Contribution to journalArticlepeer-review

Abstract

The way in which the luminosity of brightest cluster galaxy varies with cluster parameters is investigated in a sample of 84 Abell clusters of moderate redshift and of richness classes in the zero-to-5 range. A photometric system is used which is well matched with the low noise CCD detector employed, as well as to the arrangement of galaxies with different redshifts on a standard system. The data, together with measurements from earlier work which forms a low redshift sample of the 199 brightest cluster galaxies, confirm that the luminosity dispersion in first-rank cluster galaxies is about 0.34 mag. The colors of giant ellipticals have not changed since redshifts of 0.25, and the richness correction is well established at 0.10 mag/Abell richness class. Application of these corrections reduces the luminosity dispersion to 0.29 mag.
Original languageEnglish (US)
Pages (from-to)337-355
JournalAstrophysical Journal, Part 1
Volume264
DOIs
StatePublished - Jan 1 1983

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