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Information from the kinematics of F and G stars in the solar neighborhood
Chen, YQ; Zhao, G; Shi, JR
2002-10-01
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
Volume2Issue:5Pages:419-428
AbstractWe have calculated the orbital parameters for 90 stars in Chen et al. and updated the kinematic data for stars in Edvardsson et al. by using the accurate Hipparcos parallaxes and proper motions, and recalculated the a-element abundances in Edvardsson et al. in a way consistent with Chen et al. The two sets of data are combined in a study of stellar populations and characteristics of F & G stars in the solar neighborhood. We confirm the result of Chen et al. that a distinguishable group of stars may belong to the thick disk rather than the thin disk. The ages for the stars are determined using the theoretical isochrones of VandenBerg et al. The age-metallicity relation is investigated for different subgroups according to distance from the sun and galactic orbital parameters. It is found that a mixing of stars with different orbital parameters significantly affect the age-metallicity relation for the disk. Stars with orbits confined to the solar circle all have metallicities [Fe/H] > -0.3 irrespective of their distances from the sun or from the Galactic plane.
KeywordStars : Kinematics Galaxy : Evolution Galaxy : Solar Neighborhood
Indexed BySCI
Language英语
WOS IDWOS:000178799000005
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8514
Collection光学天文研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Chen, YQ,Zhao, G,Shi, JR. Information from the kinematics of F and G stars in the solar neighborhood[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2002,2(5):419-428.
APA Chen, YQ,Zhao, G,&Shi, JR.(2002).Information from the kinematics of F and G stars in the solar neighborhood.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2(5),419-428.
MLA Chen, YQ,et al."Information from the kinematics of F and G stars in the solar neighborhood".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 2.5(2002):419-428.
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