EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 369/3 Article
Free access article

Issue A&A
Volume 369, Number 3, April III 2001
Page(s) 763 - 777
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20010188



A&A 369, 763-777 (2001)
DOI: 10.1051/0004-6361:20010188

HI-rich dwarf galaxies in the Hydra I cluster

II. Spectroscopic data
P.A. Duc1, V. Cayatte2, C. Balkowski2, T. X. Thuan3, P. Papaderos4 and W. van Driel5

1  CNRS URA 2052 and CEA, DSM, DAPNIA, Service d'astrophysique, 91191 Gif-sur-Yvette Cedex, France
2  Observatoire de Paris, DAEC, UMR 8631, CNRS and Université Paris 7, 92195 Meudon Cedex, France
3  Astronomy Department, University of Virginia, Charlottesville, VA 22903, USA
4  Universitäts-Sternwarte, Geismarlandstr. 11, 37083 Göttingen, Germany
5  Unité Scientifique Nançay, CNRS USR B704, Observatoire de Paris, 92195 Meudon Cedex, France

(Received 8 December 2000 / Accepted 18 January 2001)

Abstract
We present spectrophotometric data for a sample of 15 HI-selected dwarf galaxies in the Hydra I cluster (see Duc et al. 1999, Paper I). Long-slit spectra were obtained along an axis including the nucleus and the brightest HII region in each galaxy. The oxygen abundance was estimated from the emission lines using various methods. All dwarfs host one or several star-forming regions that are, for the most part, located outside the nucleus. We did not find in this survey any extremely metal-deficient objects, but we did observe some galaxies with a surprisingly high metallicity for their luminosity. In a following paper in this series, we will discuss the global properties of the HI-rich dwarfs in the Hydra I cluster and focus on their dependence on the environment.


Key words: galaxies: abundances -- galaxies: dwarf -- galaxies: clusters: general

Offprint request: P.-A. Duc, paduc@cea.fr

SIMBAD Objects



© ESO 2001


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.