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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 | Affiliation: | 4,8), 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 | 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. | Source: | arXiv, astro-ph/0405402 | Services: | Forum | Review | PDF | Favorites |
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