Surface brightness and color distributions of elliptical and SO galaxies. II - E galaxies in the clusters Abell 426 /Perseus/ and Abell 1367

Details Surface brightness and color distributions of elliptical and SO galaxies. II - E galaxies in the clusters Abell 426 /Perseus/ and Abell 1367 Surface brightness and color distributions of elliptical and SO galaxies. II - E galaxies in the clusters Abell 426 /Perseus/ and Abell 1367

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978aj.....83..732s&link_type=abstract

Astronomical Journal, vol. 83, July 1978, p. 732-749, 751, 753 (9 ff.).

Astronomy and Astrophysics

Astronomy

104

Color, Elliptical Galaxies, Galactic Clusters, Luminous Intensity, Spiral Galaxies, Astronomical Models, Astronomical Photometry, Brightness, Galactic Evolution, Halos

Scientific paper

Surface-brightness and color distributions are presented for 72 elliptical galaxies in the spiral-poor cluster A426 (Perseus) and 48 ellipticals in the spiral-rich cluster A1367. U- and R-band surface-brightness profiles are derived from photographs for all systems which appear spheroidal, and various checks on the profile accuracy are performed. The resulting ellipticity distributions and surface-brightness profiles are analyzed, and information is provided on profile classes, absolute magnitudes, color differences, (U-R) colors, ellipticities, and major-axis position angles. Structural properties of the sample galaxies are discussed using the R-band surface photometry as a 'tracer' of the stellar density distributions. The results indicate that: (1) more luminous galaxies have larger effective radii and lower effective surface brightnesses; (2) galaxies in A1367 generally have larger effective radii than those in Perseus; (3) the core-region galaxies in Perseus tend to have smaller effective radii than galaxies located in the outer cluster region; and (4) environmental effects appear to play a significant role in affecting the structure of elliptical galaxies.

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