Volume 421, Number 2, July II 2004
|Page(s)||509 - 518|
|Published online||22 June 2004|
Laboratoire de l'Accélérateur Linéaire, Université Paris-Sud, 91405 Orsay Cedex, France
2 Observatoire Midi-Pyrénées, unité associée au CNRS (UMR 5572), 57 Avenue d'Azereix, BP 826, 65008 Tarbes Cedex, France
3 CERN, 1211 Genève 23, Switzerland
4 Physique Corpusculaire et Cosmologie, Collège de France, laboratoire associé au CNRS-IN2P3 (UMR 7550), 11 place Marcelin Berthelot, 75231 Paris Cedex 05, France
5 DAPNIA/SPP, CEN Saclay, 91191 Gif-sur-Yvette, France
6 Department of Physics, University of Utah, 115 S 1400 E Rm 201, Salt Lake City, UT 84112-0830, USA
7 Observatoire Midi-Pyrénées, unité associée au CNRS (UMR 5572), 14 avenue Belin, 31400 Toulouse, France
8 Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
9 LERMA, Observatoire de Paris, 61 avenue de l'Observatoire, 75014 Paris, France
Corresponding author: M. Aurière, firstname.lastname@example.org
Accepted: 23 March 2004
We present the AGAPE astrometric and photometric catalogue of 1579 variable stars in a field centred on M 31. This work is the first survey devoted to variable stars in the bulge of M 31. The R magnitudes of the objects and the colours suggest that our sample is dominated by red long-period variable stars (LPV), with a possible overlap with Cepheid-like type II stars. Fits of the light curves with sinusoids suggest that a large fraction of the stars correspond to periodic or semi-periodic objects with periods longer than 100 days. Twelve nova candidates are identified. Correlations with other catalogues suggest that 2 novae could be recurrent novae and provide possible optical counterparts for 2 supersoft X-ray sources candidates observed with Chandra.
Key words: galaxies: individual: M 31 / cosmology: dark matter / stars: variables: general / stars: novae, cataclysmic variables / stars: variables: Cepheids / X-rays: stars
The full Table [see full text] is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (18.104.22.168) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/421/509
© ESO, 2004
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