A Kinematical Study of the Galactic Disk Using Red Clump Stars

被引：0
|
作者：
Ribas, Salvador J. [1 ,2 ]
Figueras, Francesca [3 ]
Torra, Jordi [3 ]
机构：
[1] Consorci Montsec, Pl Major 1, Ager 25691, Lleida, Spain
[2] Univ Barcelona, Dept Astronom & Meteorol, Barcelona, Spain
[3] Univ Barcelona, Inst Ciencies Cosmos, Dept Astronom & Meteorol, IEEC UB, Barcelona, Spain
来源：
HIGHLIGHTS OF SPANISH ASTROPHYSICS V | 2010年
关键词：
D O I：
10.1007/978-3-642-11250-8_115
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We determine kinematical properties of the Galactic disk using a large sample of Red Clump stars extracted from the UCAC2 catalogue using photometric data from 2MASS catalogue. The compiled large sample, more than 2 million stars with accurate enough distances and proper motions, allow us to trace the disk kinematics up to 2 Kpc from the Sun. First and second order galactic rotation parameters are determined and the Dehnen and Binney (1998) method is used to characterize the velocity distribution function in a large area of the galactic plane. Extensive simulations have permitted to evaluate the capabilities of the method as well as the selection and completeness effects.
引用
收藏
页码：433 / 433
页数：1
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