Kinematics of metal-poor stars in the galaxy. II. Proper motions for a large nonkinematically selected sample

被引:166
作者
Beers, TC [1 ]
Chiba, M
Yoshii, Y
Platais, I
Hanson, RB
Fuchs, B
Rossi, S
机构
[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
[2] Natl Astron Observ, Mitaka, Tokyo 1818588, Japan
[3] Univ Tokyo, Fac Sci, Inst Astron, Mitaka, Tokyo 1818588, Japan
[4] Yale Univ, Dept Astron, New Haven, CT 06520 USA
[5] Univ Calif Santa Cruz, Lick Observ, Univ Calif Observ, Santa Cruz, CA 95064 USA
[6] Astron Rech Inst, D-69120 Heidelberg, Germany
[7] Univ Sao Paulo, Inst Astron & Geofis, BR-04301904 Sao Paulo, Brazil
关键词
galaxy : abundances; galaxy : halo; galaxy : kinematics and dynamics stars : Population II; surveys;
D O I
10.1086/301410
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a revised catalog of 2106 Galactic stars, selected without kinematic bias and with available radial velocities, distance estimates, and metal abundances in the range -4.0 less than or equal to [Fe/H] less than or equal to 0.0. This update of the 1995 Beers & Sommer-Larsen catalog includes newly derived homogeneous photometric distance estimates, revised radial velocities for a number of stars with recently obtained high-resolution spectra, and refined metallicities for stars originally identified in the HK objective-prism survey (which account for nearly half of the catalog) based on a recent recalibration. A subset of 1258 stars in this catalog have available proper motions based on measurements obtained with the Hipparcos astrometry satellite or taken from the updated Astrographic Catalogue (second epoch positions from either the Hubble Space Telescope Guide Star Catalog or the Tycho Catalogue), the Yale/San Juan Southern Proper Motion Catalog 2.0, and the Lick Northern Proper Motion Catalog. Our present catalog includes 388 RR Lyrae variables (182 of which are newly added), 38 variables of other types, and 1680 nonvariables, with distances in the range 0.1 to 40 kpc.
引用
收藏
页码:2866 / 2881
页数:16
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