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Variable stars towards the bulge of M31: the AGAPE catalogue

Abstract : 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.
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Contributor : Simone Lantz Connect in order to contact the contributor
Submitted on : Thursday, December 14, 2006 - 1:06:37 PM
Last modification on : Tuesday, October 19, 2021 - 6:57:28 PM

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R. Ansari, M. Auriere, P. Baillon, A. Bouquet, G. Coupinot, et al.. Variable stars towards the bulge of M31: the AGAPE catalogue. Astronomy and Astrophysics - A&A, EDP Sciences, 2004, 421, pp.509-518. ⟨10.1051/0004-6361:20035659⟩. ⟨in2p3-00022262⟩



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