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Planet host stars: Mass, age and kinematics
Chen, YQ; Zhao, G
AbstractWe determine the mass, age and kinematics of 51 extra-solar planet host stars. The results are then used to search for signs of connection of the data with metallicity and to investigate the population nature. We find that the increase in mean metallicity with stellar mass is similar to that in normal field stars, so it seems unsuitable to use this relation as a constraint on the theory of planet formation. The age and kinematic distributions seem to favour the metallicity of extra-solar planet host stars being initial. Although the kinematic data of these stars indicate their origin from two populations - the thin and the thick disks, kinematics may not help in the maintenance of the planet around the host. Stars with planets, brown dwarfs or stellar companions are sorted into three groups and re-investigated separately for their formation mechanism. The main results indicate that stars with M-2 < 25M(J) have [Fe/H] > -0.1 and a wide period range, but there are no other differences. Thus, there does not seem to be any physically distinguishable characteristics among the three star groups.
KeywordStars : Kinematics Stars : Masses Planetary System Ages
Indexed BySCI
WOS IDWOS:000175150900008
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
AffiliationChinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Chen, YQ,Zhao, G. Planet host stars: Mass, age and kinematics[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2002,2(2):151-160.
APA Chen, YQ,&Zhao, G.(2002).Planet host stars: Mass, age and kinematics.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2(2),151-160.
MLA Chen, YQ,et al."Planet host stars: Mass, age and kinematics".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 2.2(2002):151-160.
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