Photometry of Brightest Galaxies in Twenty Abell Clusters.

Details Photometry of Brightest Galaxies in Twenty Abell Clusters. Photometry of Brightest Galaxies in Twenty Abell Clusters.

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....114..474g&link_type=abstract

Astronomical Journal v.114, p. 474-481 (1997)

Astronomy and Astrophysics

Astronomy

Galaxies: Clusters: Individual: Abell, Galaxies: Photometry

Scientific paper

CCD imaging and extractions from the Digitized Sky Survey were used to obtain photometry of the first- and second-ranked galaxies in twenty Abell galaxy clusters selected only on redshift (z < 0.25) and richness (R > 0). For each object, apparent magnitudes were calculated in circular apertures with radii of 5 h(-1) and 10 h(-1) kpc and a total magnitude estimated using an elliptical isophote fitting routine. The distribution of absolute magnitudes in the 10 h(-1) kpc radius aperture is consistent with that found in previous work and can be described by a gaussian with mean = -21.54 +/- 0.10 and dispersion sigma_ {M_1} = 0.37 +/- 0.06. There is no evidence for significant luminosity evolution or dependence on cluster properties, although the small size of the sample precludes definitive limits.

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