Issue |
A&A
Volume 445, Number 3, January III 2006
|
|
---|---|---|
Page(s) | 805 - 817 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361:20053816 | |
Published online | 03 January 2006 |
WINGS: a WIde-field Nearby Galaxy-cluster Survey
I. Optical imaging
1
INAF – Padova Astronomical Observatory, Vicolo Osservatorio 5, 35122 Padova, Italy e-mail: fasano@pd.astro.it
2
CEA/DSM/DAPNIA, Service d'Astrophysique, Gif-sur-Yvette, France
3
Institut d'Astrophysique de Paris, 98 bis Bd Arago, 75014 Paris, France
4
Astronomy Department, University of Padova, Vicolo Osservatorio 2, 35122 Padova, Italy
5
Instituto de Astrofísica de Andalucía (CSIC) Apartado 3004, 18080 Granada, Spain
6
Copenhagen University Observatory. The Niels Bohr Institute for Astronomy Physics and Geophysics, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
7
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, Hi 96822, USA
8
School of Physics, University of New South Wales, Sydney 2052, Australia
9
Observatories of the Carnegie Institution of Washington, Pasadena, CA 91101, USA
Received:
12
July
2005
Accepted:
5
September
2005
This is the first paper of a series that will present data and
scientific results from the WINGS project, a wide-field,
multiwavelength imaging and spectroscopic survey of galaxies in 77
nearby clusters. The sample was extracted from the ROSAT catalogs of
X-Ray emitting clusters, with constraints on the redshift
() and distance from the galactic plane
(
deg).
The global goal of the WINGS project is the systematic study of the
local cosmic variance of the cluster population and of the properties
of cluster galaxies as a function of cluster properties and local
environment. This data collection will allow the definition of a local,
“zero-point” reference against which to gauge the cosmic evolution when
compared to more distant clusters.
The core of the project consists of wide-field optical imaging of
the selected clusters in the B and V bands. We have also completed
a multi-fiber, medium-resolution spectroscopic survey for 51 of the
clusters in the master sample. The imaging and spectroscopy data were
collected using, respectively, the
WFC@INT and WYFFOS@WHT in the northern hemisphere, and the WFI@MPG and
2dF@AAT in the southern hemisphere. In addition, a NIR (J, K) survey of
50 clusters and an H
survey of some 10 clusters are presently ongoing
with the WFCAM@UKIRT and WFC@INT, respectively, while a very-wide-field
optical survey has also been programmed with OmegaCam@VST.
In this paper we briefly outline the global objectives and the main
characteristics of the WINGS project. Moreover, the observing strategy
and the data reduction of the optical imaging survey (WINGS-OPT) are
presented. We have achieved a photometric accuracy of
0.025 mag,
reaching completeness to
. Field size and resolution (FWHM)
span the absolute intervals (1.6–2.7) Mpc and (0.7–1.7) kpc,
respectively, depending on the redshift and on the seeing. This allows
the planned studies to obtain a valuable description of the local
properties of clusters and galaxies in clusters.
Key words: galaxies: photometry / galaxies: fundamental parameters / galaxies: evolution
© ESO, 2006
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