Redshifts for galaxies in three Yerkes poor clusters

Details Redshifts for galaxies in three Yerkes poor clusters Redshifts for galaxies in three Yerkes poor clusters

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...235..347s&link_type=abstract

Astrophysical Journal, Part 1, vol. 235, Jan. 15, 1980, p. 347-350.

Astronomy and Astrophysics

Astrophysics

18

Astronomical Photometry, Galactic Clusters, Galactic Radiation, Red Shift, Astronomical Catalogs, Magnitude, Photographic Plates

Scientific paper

Redshifts have been obtained for 11 galaxies in the Yerkes poor cluster AWM 7, five galaxies in AWM 5, and two galaxies in AWM 1. In contrast to the result for AWM 4 previously noted by Stauffer and Spinrad, both AWM 5 and AWM 7 are real clusters with apparent line-of-sight velocity dispersions of 400 km/s and 600 km/s respectively. Surface photometry of the cD galaxy in AWM 7, obtained with the Berkeley PDS from a Crossley plate of the cluster, indicates that it is quite luminous, with an absolute magnitude to r about 30 kpc of M(v) about -23.5. A rough dynamical estimate of the AWM 7 cD mass from the spectroscopic data gives M(cD) about 2.0 x 10 to the 13th solar masses.

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