Variable stars towards the bulge of M31: the AGAPE catalogue

We present the AGAPE astrometric and photometric catalogue of 1579 variable stars in a 14'x10' field centred on M31. This work is the first survey devoted to variable stars in the bulge of M31. The R magnitudes of the objects and the B-R colours suggest that our sample is dominated by red...

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Bibliographic Details
Published in:arXiv.org 2004-05
Main Authors: Ansari, R, Auriere, M, Baillon, P, Bouquet, A, Coupinot, G, Coutures, Ch, Ghesquiere, C, Giraud-Heraud, Y, Gillieron, D, Gondolo, P, Hecquet, J, Kaplan, J, Kim, A, Y Le Du, Melchior, A L, Moniez, M, Picat, J P, Soucail, G
Format: Article
Language:English
Subjects:
Lunar eclipses
Novae
Optical counterparts (astronomy)
Photometry
Stars
Variable stars
X ray sources
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Summary:We present the AGAPE astrometric and photometric catalogue of 1579 variable stars in a 14'x10' field centred on M31. This work is the first survey devoted to variable stars in the bulge of M31. The R magnitudes of the objects and the B-R colours suggest that our sample is dominated by red long-period variable stars (LPV), with a possible overlap with Cepheid-like type II stars. 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.
ISSN:2331-8422
DOI:10.48550/arxiv.0405402