Streaming motions of galaxy clusters. I. (Smith+, 2000)

Details Streaming motions of galaxy clusters. I. (Smith+, 2000) Streaming motions of galaxy clusters. I. (Smith+, 2000)

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ycat..73130469s&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/313/469. Originally published in: 2000MNRAS.313..469S

Physics

Clusters: Galaxy, Redshifts, Velocity Dispersion

Scientific paper

The present paper is the first in a series presenting results of the "Streaming Motions of Abell Cluster" (SMAC) project. We present new spectroscopic data for 532 early-type galaxies, predominantly Abell cluster members with cz<12000km/s. We tabulate 919 individual measurements, from six observing runs, for recession velocity, cz, central velocity dispersion, σ, and magnesium line-strength indices, Mg2 and Mgb. The median estimated error, per measurement, in σ is 5 per cent. The Mg2 line-strength data have median errors of 0.009mag. The observed scatter between repeat measurements is largely accounted for by photon-counting errors. These data will be employed in forthcoming papers, where they will form part of a merged and standardized catalogue of Fundamental Plane data for use in cluster distance estimates and peculiar velocity analyses.
(1 data file).

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