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29 March 2024
 
  » arxiv » astro-ph/0405402

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Variable stars towards the bulge of M31: the AGAPE catalogue
R. Ansari ; M. Auriere ; P. Baillon ; A. Bouquet ; G. Coupinot ; Ch. Coutures ; C. Ghesquiere ; Y. Giraud-Heraud ; D. Gillieron ; P. Gondolo ; J. Hecquet ; J. Kaplan ; A. Kim ; Y. Le Du ; A.L. Melchior ; M. Moniez ; J.P. Picat ; G. Soucail ;
Date 20 May 2004
Journal Astron.Astrophys. 421 (2004) 509-518
Subject astro-ph
Affiliation4,8), Y. Le Du , A.L. Melchior , M. Moniez , J.P. Picat , G. Soucail ( LAL-Orsay, LATT/OMP-Tarbes, CERN, PCC College de France, CEA/DAPNIA/SPP, University of Utah, LATT/OMP-Toulouse, LBL-Berkeley, LERMA-Paris
AbstractWe 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.
Source arXiv, astro-ph/0405402
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