Local stars as tracers of galactic evolution

被引:8
作者
Nordström, B
Andersen, J
Olsen, EH
Fux, R
Mayor, M
Mowlavi, N
Pont, F
机构
[1] Niels Bohr Inst Astron Phys & Geophys, DK-2100 Copenhagen, Denmark
[2] Observ Geneva, CH-1290 Geneva, Switzerland
关键词
D O I
10.1023/A:1002100703718
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We describe the overall properties of a new catalogue of metallicities, ages, and galactic orbits for a large, complete sample of F and G dwarfs in the solar neighbourhood. Based on a magnitude-limited sample of similar to 14 000 stars, it is volume-complete to similar to 40 pc. Together with the astrophysical parameters of direct relevance to models of the evolution of the disk, it will contain the basic photometric, astrometric, and radial velocity data from which they are derived. Information on duplicity is also included. The full exploitation of the data will require a lengthy analysis, in particular to assess the degree of completeness of subsamples of stars of different population types. An early result on the effects of diffusion of galactic orbits in the disk - essential for understanding the scatter in the age-metallicity diagram and estimating the birth radius of stars - is briefly illustrated.
引用
收藏
页码:235 / 241
页数:7
相关论文
共 12 条
[1]  
BASTIAN U, 1991, PPM STAR CATALOGUES, V1
[2]  
*CARLSB MER CAT LA, 1991, OBS POS STARS PLAN, V5
[3]  
EDVARDSSON B, 1993, ASTRON ASTROPHYS, V275, P101
[4]  
ESA, 1997, ESA SP-1200, The Hipparcos and Tycho Catalogues
[5]  
FUX R, 1997, THESIS GENEVA OBSERV, P147
[6]  
Gummersbach CA, 1998, ASTRON ASTROPHYS, V338, P881
[7]  
Nordstrom B, 1997, ASTRON ASTROPHYS, V322, P460
[8]   Radial velocities, rotations, and duplicity of a sample of early F-type dwarfs [J].
Nordstrom, B ;
Stefanik, RP ;
Latham, DW ;
Andersen, J .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1997, 126 (01) :21-30
[9]  
NORDSTROM B, 1997, HIST MILKY WAY ITS S, V112, P145
[10]  
OLSEN EH, 1994, ASTRON ASTROPHYS SUP, V104, P429