EDP Sciences
Free access
Volume 409, Number 2, October II 2003
Page(s) 439 - 448
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20031078

A&A 409, 439-448 (2003)
DOI: 10.1051/0004-6361:20031078

Multi-object spectroscopy of low redshift EIS clusters. II

L. F. Olsen1, L. Hansen1, H. E. Jørgensen1, C. Benoist2, L. da Costa3 and M. Scodeggio4

1  Copenhagen University Observatory, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
2  Observatoire de la Côte d'Azur, CERGA, BP 229, 06304 Nice Cedex 4, France
3  European Southern Observatory, Karl-Schwartzschild-Str. 2, 85748 Garchin b. München, Germany
4  Istituto di Fisica Cosmica - CNR, Milano, Italy

(Received 17 April 2003 / Accepted 3 July 2003 )

We present the results of carrying out multi-object spectroscopy in 10 EIS cluster fields. Based on the list of 345 galaxy redshifts we identify significant 3D-density enhancements. For 9 of the EIS clusters we identify significant 3D-concentrations corresponding to the originally detected cluster candidate. We find redshifts in the range $0.097\leq z\leq0.257$ which is in good agreement with the matched filter estimate of $z_{{\rm MF}}=0.2$. We estimate velocity dispersions in the range 219-1160 km s -1 for the confirmed clusters.

Key words: cosmology: observations -- galaxies: distances and redshifts

Offprint request: L. F. Olsen, lisbeth@astro.ku.dk

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