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

被引：22

作者：

Ansari, R

Aurière, M

Baillon, P

Coupinot, G

Coutures, C

Ghesquière, C

Giraud-Héraud, Y

Gillieron, D

Gondolo, P

Hecquet, J

Kaplan, J

Kim, A

Le Du, Y

Melchior, AL

Moniez, M

Picat, JP

Soucail, G

机构：

[1] CNRS, UMR 5572, Observ Midi Pyrenees, F-65008 Tarbes, France

[2] Univ Paris 11, Accelerateur Lineaire Lab, F-91405 Orsay, France

[3] CERN, CH-1211 Geneva 23, Switzerland

[4] Coll France, CNRS IN2P3, UMR 7550, F-75231 Paris 05, France

[5] CEN Saclay, SPP, DAPNIA, F-91191 Gif Sur Yvette, France

[6] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[7] CNRS, UMR 5572, Observ Midi Pyrenees, F-31400 Toulouse, France

[8] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[9] Observ Paris, LERMA, F-75014 Paris, France

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 421卷 / 02期

关键词：

galaxies : individual : M 31; cosmology : dark matter; stars : variables : general; stars; novae; cataclysmic variables; stars : variables : Cepheids; X-rays : stars;

D O I：

10.1051/0004-6361:20035659

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the AGAPE astrometric and photometric catalogue of 1579 variable stars in a 14' x 10' 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 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. 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.

引用

页码：509 / 518

页数：10

共 57 条

[1] The MACHO project LMC variable star inventory. VII. The discovery of RV Tauri stars and new type II Cepheids in the large magellanic cloud [J].