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A Spectroscopic Survey of the Galaxy Cluster CL 1358+62 at z = 0.328

1998; IOP Publishing; Volume: 498; Issue: 1 Linguagem: Inglês

10.1086/305553

1538-4357

David B. Fisher, Daniel G. Fabricant, Marijn Franx, Pieter van Dokkum,

Stellar, planetary, and galactic studies

We present a spectroscopic survey of the rich X-ray-selected galaxy cluster CL 1358+6245 at z = 0.328. When our 173 new multislit spectra of cluster galaxies are combined with data from the literature, we produce a catalog of 232 cluster members in a region 10' × 11' (3.5 Mpc × 3.8 Mpc) surrounding the brightest cluster galaxy. These data are used to study the structure and dynamics of the cluster and to examine the radial and velocity distributions as a function of spectral type. We classify the spectral types of the cluster members according to the strengths of the Balmer absorption lines (Hδ, Hγ, and Hβ) and the [O II] 3727 Å emission line.