Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274..541w&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 274, Nov. 15, 1983, p. 541-548.
Astronomy and Astrophysics
Astronomy
9
Elliptical Galaxies, Galactic Clusters, Galactic Structure, Classifications, Data Correlation, Disk Galaxies, Sky Surveys (Astronomy), Southern Sky
Scientific paper
The dependence of disk galaxy morphology on local surface density which was demonstrated by Dressler (1980) holds for the presently studied large sample of galaxies, and a systematic misclassification of certain weak-dished galaxies as elliptical galaxies is noted on plate material similar to the Southern Sky Survey. Employing only the classifications made from sky-limited, large scale plates, the dependence of elliptical fraction on local density is found to be very weak. The groups sampled all include a bright, elliptical-like galaxy, and the density of elliptical galaxies in the field is lower than in these groups. A combination of these results with those of Wirth and Gallagher (1980) concerning the dwarf population in groups and clusters indicates the operation of a gas removal mechanism in the neighborhood of giant elliptical galaxies.
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