Orbital parameters of the high-mass X-ray binary 4U 2206+54
Solar and Stellar Astrophysics
2015-06-23 v1 High Energy Astrophysical Phenomena
Abstract
We present new radial velocities of the high-mass X-ray binary star 4U 2206+54 based on optical spectra obtained with the Coude spectrograph at the 2m RCC telescope at the Rozhen National Astronomical Observatory, Bulgaria in the period November 2011 -- July 2013. The radial velocity curve of the HeI 6678 \AA\ line is modeled with an orbital period P = 9.568~d and an eccentricity of = 0.3. These new measurements of the radial velocity resolve the disagreements of the orbital period discussions.
Keywords
Cite
@article{arxiv.1411.7561,
title = {Orbital parameters of the high-mass X-ray binary 4U 2206+54},
author = {K. A. Stoyanov and R. K. Zamanov and G. Y. Latev and A. Y. Abedin and N. A. Tomov},
journal= {arXiv preprint arXiv:1411.7561},
year = {2015}
}
Comments
4 pages, 4 figures. Accepted for publication in Astronomische Nachrichten