EDP Sciences
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Volume 433, Number 2, April II 2005
Page(s) 591 - 596
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20041190

A&A 433, 591-596 (2005)
DOI: 10.1051/0004-6361:20041190

Orbits of new Hipparcos binaries. I

I. I. Balega1, Y. Y. Balega1, K.-H. Hofmann2, E. A. Pluzhnik1, 3, D. Schertl2, Z. U. Shkhagosheva1, 3 and G. Weigelt2

1  Special Astrophysical Observatory, N. Arkhyz, Karachai-Cherkesia 369167, Russia
    e-mail: balega@sao.ru
2  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
3  Isaac Newton Institute of Chile, SAO RAS Branch, Russia

(Received 29 April 2004 / Accepted 2 August 2004)

We present first orbits for 6 new Hipparcos binaries. The orbits were determined from speckle interferometric measurements collected mainly at the 6 m BTA telescope of the Special Astrophysical Observatory in Zelenchuk. Three of the systems, HIP 11352, HIP 14075 and HIP 14230, have late G- or early K-type components, while HIP 14669 = GJ 125, HIP 106972 = GJ 4210 and HIP 111685 = GJ 4287 have M-type components. The periods of the orbits are in the range of 6-28 years. Mass sums and their errors are derived for the systems. The Hipparcos parallax error is the dominating error source of the mass determination.

Key words: stars: binaries: visual -- stars: fundamental parameters -- stars: late-type

SIMBAD Objects

© ESO 2005