High velocity spectroscopic binary orbits from photoelectric radial velocities: BD +30 2129 A

Details High velocity spectroscopic binary orbits from photoelectric radial velocities: BD +30 2129 A High velocity spectroscopic binary orbits from photoelectric radial velocities: BD +30 2129 A

2007-01-30

arxiv.org/abs/astro-ph/0701849v1

BalticAstron.15:539-546,2006

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures

Scientific paper

The spectroscopic orbit of a high proper motion visual binary system BD +30 2129 component A is determined from 22 CORAVEL-type radial velocity measurements. A period of P = 32.79 days and a moderate eccentricity e = 0.29 are obtained. The visual system AB has a projected spatial separation ~580 AU. The system's barycenter velocity V0 = -35.95 km/s and the transverse velocity Vt = 132.2 km/s. The Galactic spatial velocity components U = +76.7 km/s, V = 110.4 km/s, W = -26.6 km/s, and a large ultraviolet excess give evidence that the star belongs to thick disk population of the Galaxy.

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