Brightest members of rich and poor clusters of galaxies. I Surface brightness profiles of cD-type galaxies

Details Brightest members of rich and poor clusters of galaxies. I Surface brightness profiles of cD-type galaxies Brightest members of rich and poor clusters of galaxies. I Surface brightness profiles of cD-type galaxies

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274..502m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 274, Nov. 15, 1983, p. 502-520.

Astronomy and Astrophysics

Astrophysics

29

Astronomical Photometry, Brightness Distribution, Elliptical Galaxies, Galactic Clusters, Galactic Evolution, Galactic Structure, Luminosity, Radii, Sky Brightness

Scientific paper

Surface photometry of a sample of the brightest members of rich and poor clusters of galaxies has been carried out on plates obtained at the prime focus of the CTIO 4 m telescope. Some of the galaxies resemble Morgan's cD types, and most of them have surface brightness profiles which are well represented by de Vaucouleur's empirical formula at surface brightnesses brighter than 24 mag/sq arcsec. The de Vaucouleurs effective radius and the surface brightness at the radius for all the galaxies in the sample are tightly correlated in a manner much like that recently discussed by Kormendy. Two inferences follow from this correlation: (1) the central parts of brightest cluster members appear to be indistinguishable from normal giant elliptical galaxies; (2) the arguments for cannibalism suggested by Ostriker and Hausman (1977) and by White (1978) are qualitatively justified.

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