The Seven Sisters DANCe I. Empirical isochrones, luminosity, and mass functions of the Pleiades cluster

被引:56
作者
Bouy, H. [1 ]
Bertin, E. [2 ,3 ]
Sarro, L. M. [4 ]
Barrado, D. [1 ]
Moraux, E. [5 ]
Bouvier, J. [5 ]
Cuillandre, J. -C. [6 ]
Berihuete, A. [7 ]
Olivares, J. [4 ,5 ]
Beletsky, Y. [8 ]
机构
[1] CSIC, INTA, Dept Astrofis, Ctr Astrobiol, Madrid 28691, Spain
[2] CNRS, Inst Astrophys Paris, UMR 7095, F-75014 Paris, France
[3] UPMC, F-75014 Paris, France
[4] UNED, Dept Inteligencia Artificial, Madrid 28040, Spain
[5] Univ Grenoble 1, CNRS, INSU, IPAG,UMR 5274, F-38041 Grenoble, France
[6] Canada France Hawaii Telescope Corp, Kamuela, HI 96743 USA
[7] Univ Cadiz, Dept Stat & Operat Res, Cadiz 11510, Spain
[8] Carnegie Inst Sci, Las Campanas Observ, La Serena, Chile
基金
美国国家航空航天局; 美国国家科学基金会;
关键词
proper motions; stars: luminosity function; mass function; open clusters and associations: individual: M 45; BROWN DWARF CANDIDATES; PROPER MOTIONS; STARS; ATMOSPHERES; PHOTOMETRY; LITHIUM; MEMBERS; CONSTRAINTS; ASTROMETRY; ROTATION;
D O I
10.1051/0004-6361/201425019
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Context. The DANCe survey provides photometric and astrometric (position and proper motion) measurements for approximately 2 million unique sources in a region encompassing similar to 80 deg(2) centered on the Pleiades cluster. Aims. We aim at deriving a complete census of the Pleiades and measure the mass and luminosity functions of the cluster. Methods. Using the probabilistic selection method previously described, we identified high probability members in the DANCe (i >= 14 mag) and Tycho-2 (V less than or similar to 12 mag) catalogues and studied the properties of the cluster over the corresponding luminosity range. Results. We find a total of 2109 high-probability members, of which 812 are new, making it the most extensive and complete census of the cluster to date. The luminosity and mass functions of the cluster are computed from the most massive members down to similar to 0.025 M-circle dot. The size, sensitivity, and quality of the sample result in the most precise luminosity and mass functions observed to date for a cluster. Conclusions. Our census supersedes previous studies of the Pleiades cluster populations, in terms of both sensitivity and accuracy.
引用
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页数:17
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