Linear clusters of galaxies

Details Linear clusters of galaxies Linear clusters of galaxies

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238..445a&link_type=abstract

Astrophysical Journal, Part 1, vol. 238, June 1, 1980, p. 445-457.

Astronomy and Astrophysics

Astrophysics

55

Galactic Clusters, Galactic Structure, Angular Distribution, Astronomical Catalogs, Calibrating, Data Reduction, Electrophotometry, Ellipticity, Frequency Distribution, Position (Location), Tables (Data)

Scientific paper

Seven linear clusters of galaxies from the catalog of Rood and Sastry have been studied primarily to determine whether the principal axes of the member galaxies exhibit any tendency toward alignment. The major axes of galaxies in two of the clusters (Abell 999 and Abell 2197) show a distinct tendency to lie along the cluster major axes. Examination of all the galaxies in our seven-cluster sample reveals that the major axes of these cluster members tend to lie either along or perpendicular to the cluster major axis and avoid intermediate position angles. For this sample, there appears to be no correlation between E-galaxy flattening and cluster shape, a result in contradiction to the recent study by Strom and Strom of ellipticals located in nine clusters of greater richness. Significant evidence of mass segregation is found in two clusters (Abell 179 and Abell 194).

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