Variable stars towards the bulge of M 31: The AGAPE catalogue

2004/06/22 by R. Ansari, M. Aurière, P. Baillon +20 · 3 citations
Physics and Astronomy · Engineering · #Astrophysical Phenomena and Observations #Stellar, planetary, and galactic studies #Astronomical Observations and Instrumentation

paper · pdf · doi:10.1051/0004-6361:20035659

Abstract

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.

Cited by

• The Wendelstein Calar Alto Pixellensing Project (WeCAPP): the M 31 variable star catalogue
• The Wendelstein Calar Alto Pixellensing Project (WeCAPP): the M 31 nova catalogue
• Nainital Microlensing Survey – detection of short period Cepheids in the disk of M 31

Related

• The Wendelstein Calar Alto Pixellensing Project (WeCAPP): the M 31 variable star catalogue
• THE OPTICAL GRAVITATIONAL LENSING EXPERIMENT. THE CATALOG OF PERIODIC VARIABLE STARS IN THE GALACTIC BULGE. II. PERIODIC VARIABLES IN FOUR BAADE'S WINDOW FIELDS: BW1, BW2, BW3 AND BW4
• The Optical Gravitational Lensing Experiment. The Catalog of Periodic Variable Stars in the Galactic Bulge. V. Periodic Variables in Fields: MM5-A, MM5-B, MM7-A and MM7-B
• Identification of 13 Cepheids and 333 other variables in M 31
• THE OPTICAL GRAVITATIONAL LENSING EXPERIMENT. THE CATALOG OF PERIODIC VARIABLE STARS IN THE GALACTIC BULGE. I. PERIODIC VARIABLES IN THE CENTER OF THE BAADE'S WINDOW.