Chen Yuqin; Zhao Gang
Source Publicationchinesejournalofastronomyandastrophysics
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 M2 -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.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Chen Yuqin,Zhao Gang. planethoststarsmassageandkinematics[J]. chinesejournalofastronomyandastrophysics,2002,2(2):151.
APA Chen Yuqin,&Zhao Gang.(2002).planethoststarsmassageandkinematics.chinesejournalofastronomyandastrophysics,2(2),151.
MLA Chen Yuqin,et al."planethoststarsmassageandkinematics".chinesejournalofastronomyandastrophysics 2.2(2002):151.
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