Kinematic Properties of Chromospheric Active Binary Stars
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Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Cambridge Univ Press
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The kinematic behaviour of 362 chromospherically active binary stars (CABs) in the solar neighbourhood were investigated. The Third CABs Catalog by Eker et al. (2008) was used as the main source. The spatial distribution and the components of the Galactic space velocities of the programme stars were determined. The effects of differential rotation and Local Standard of Rest (LSR) were corrected for all systems. Forty probable moving group (MG) members were determined by Eggen's criteria. The kinematic age of the young systems, which are probable members of MGs, was calculated as 0.79 (0.21) Gyr and the rest of 322 field stars were found to have a kinematic age of 4.38 (1.1) Gyr. Field CABs were separated into two sub-groups: dwarf systems, which were formed by main sequence (dwarf) stars, and evolved systems included at least one evolved (giant or sub-giant) component. The kinematic age of 134 dwarf systems was calculated as 4.69 (0.75) Gyr and 4.15 (1.29) Gyr for 188 evolved CABs.
Açıklama
282nd Symposium of the International-Astronomical-Union -- JUL 18-22, 2011 -- Tatranska Lomnica, SLOVAKIA
Anahtar Kelimeler
active stars, kinematic, kinematic age
Kaynak
From Interacting Binaries To Exoplanets: Essential Modeling Tools
WoS Q Değeri
N/A
Scopus Q Değeri
Q4
Cilt
Sayı
282
