The Universality of the Fundamental Plane of E and S 0 Galaxies
نویسندگان
چکیده
We present here central velocity dispersion measurements for 325 early-type galaxies in eight clusters and groups of galaxies, including new observations for 212 galaxies. The clusters and groups are the A262, A1367, Coma (A1656), A2634, Cancer and Pegasus clusters, and the NGC 383 and NGC 507 groups. The new measurements were derived from medium dispersion spectra, that cover 600 A centered on the Mg Ib triplet at 5175. Velocity dispersions were measured using the Tonry & Davis cross-correlation method, with a typical accuracy of 6%. A detailed comparison with other data sources is made. Subject headings: distance scale | galaxies: distances and redshifts | galaxies: elliptical and lenticular | galaxies: fundamental parameters | galaxies: kinematics and dynamics
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