Orbits of new Hipparcos binaries. I*
Special Astrophysical Observatory, N. Arkhyz, Karachai-Cherkesia 369167, Russia e-mail: email@example.com
2 Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
3 Isaac Newton Institute of Chile, SAO RAS Branch, Russia
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
© ESO, 2005