Kinematic Properties of Chromospheric Active Binary Stars

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Tarih

2012

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

Künye