EDP Sciences
Free access
Volume 415, Number 1, February III 2004
Page(s) 9 - 18
Section Cosmology (including clusters of galaxies)
DOI http://dx.doi.org/10.1051/0004-6361:20034600

A&A 415, 9-18 (2004)
DOI: 10.1051/0004-6361:20034600

Extragalactic large-scale structures behind the southern Milky Way

IV. Redshifts obtained with MEFOS
P. A. Woudt1, R. C. Kraan-Korteweg2, V. Cayatte3, C. Balkowski3 and P. Felenbok4

1  Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa
2  Depto. de Astronomía, Universidad de Guanajuato, Apartado Postal 144, Guanajuato, Gto 36000, Mexico
3  Obs. de Paris, GEPI, CNRS and Université Paris 7, 5 place Jules Janssen, 92195 Meudon Cedex, France
4  Obs. de Paris, LUTH, CNRS and Université Paris 7, 5 place Jules Janssen, 92195 Meudon Cedex, France

(Received 24 June 2003 / Accepted 7 November 2003)

As part of our efforts to unveil extragalactic large-scale structures behind the southern Milky Way, we here present redshifts for 764 galaxies in the Hydra/Antlia, Crux and Great Attractor region ( $266^\circ \le \ell \le 338^\circ$, $\vert\,b\,\vert \la 10^\circ$), obtained with the Meudon-ESO Fibre Object Spectrograph (MEFOS) at the 3.6-m telescope of ESO. The observations are part of a redshift survey of partially obscured galaxies recorded in the course of a deep optical galaxy search behind the southern Milky Way (Kraan-Korteweg 2000; Woudt & Kraan-Korteweg 2001). A total of 947 galaxies have been observed, a small percentage of the spectra ( N = 109, 11.5%) were contaminated by foreground stars, and 74 galaxies (7.8%) were too faint to allow a reliable redshift determination. With MEFOS we obtained spectra down to the faintest galaxies of our optical galaxy survey, and hence probe large-scale structures out to larger distances ( $v \la 30\,000$ km s -1) than our other redshift follow-ups using the 1.9-m telescope at the South African Astronomical Observatory (Kraan-Korteweg et al. 1995; Fairall et al. 1998; Woudt et al. 1999) and the 64-m Parkes radio telescope (Kraan-Korteweg et al. 2002). The most distinct large-scale structures revealed in the southern Zone of Avoidance are discussed in context to known structures adjacent to the Milky Way.

Key words: catalogs -- surveys -- ISM: dust, extinction -- galaxies: distances and redshifts -- clusters: individual: ACO 3627 -- large-scale structure of Universe

Offprint request: P. A. Woudt, pwoudt@circinus.ast.uct.ac.za

SIMBAD Objects
Tables at the CDS

© ESO 2004