Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-23T14:55:21.589Z Has data issue: false hasContentIssue false

Kinematic Properties of Chromospheric Active Binary Stars

Published online by Cambridge University Press:  23 April 2012

M. Tüysüz
Affiliation:
Çanakkale University Observatory, Çanakkale, Turkey
F. Soydugan
Affiliation:
Çanakkale University Observatory, Çanakkale, Turkey
S. Bilir
Affiliation:
Istanbul University Observatory, Istanbul, Turkey email: [email protected]
O. Demircan
Affiliation:
Çanakkale University Observatory, Çanakkale, Turkey
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2012

References

Eker, Z., Ak, N. Filiz, Bilir, S., Doğru, D., Tüysü, M., Soydugan, E., Bakş, H., Uğraş, B., Soydugan, F., Erdem, A., & Demircan, O. 2008, MNRAS, 389, 1722CrossRefGoogle Scholar
Eggen, O. J. 1958, MNRAS, 118, 65CrossRefGoogle Scholar
Eggen, O. J. 1989, PASP, 101, 366CrossRefGoogle Scholar
Hall Douglas, S. 1989, SSRv, 50, 219Google Scholar
Pols Onno, R, Schroder, Klause-Peter, Hurley, Jarrod R, Tout, Christpoher A., & Eggleton, Peter P. 1998, MNRAS, 298, 525CrossRefGoogle Scholar
Tüysüz, M. 2011, Çanakkale Onsekiz Mart University Graduate School Thesis of PhD of Science. Investigation of Kinematic, Dynamic and Rotation Properties of the Chromospheric Active Binary Stars, p. 46.Google Scholar
van Leeuwen, F. 2007, A&A, 474, 653Google Scholar
Wielen, R. 1977, A&A, 60, 263Google Scholar