High Velocity Spectroscopic Binary Orbits from Photoelectric Radial Velocities: BD +82 565A

A. Bartkevicius; J. Sperauskas

High Velocity Spectroscopic Binary Orbits from Photoelectric Radial Velocities: BD +82 565A

Astrophysics 2007-05-23 v1

Authors: A. Bartkevicius , J. Sperauskas

Abstract

The spectroscopic orbit of a circumpolar high-proper-motion visual binary BD +82 565 A component is determined from 57 CORAVEL radial velocity measurements. A short period P = 12.69 d and a moderate eccentricity e = 0.30 are obtained. The visual system AB has a projected spatial separation ~830 AU. The system's barycenter velocity V_0 = -86.7 km/s, the transverse velocity V_t = 118.7 km/s and the Galactic spatial velocity components U = -62.6 km/s, V = -84.1 km/s and W = -84.2 km/s give evidence that it belongs to the thick disk of the Galaxy.

Keywords

spectroscopic binary radial velocities proper motion BD +82 565A Galactic kinematics stellar orbits

Cite

@article{arxiv.astro-ph/0601215,
  title  = {High Velocity Spectroscopic Binary Orbits from Photoelectric Radial Velocities: BD +82 565A},
  author = {A. Bartkevicius and J. Sperauskas},
  journal= {arXiv preprint arXiv:astro-ph/0601215},
  year   = {2007}
}