New and revised parameters for several southern OB binaries

Abstract

Using ESO FEROS archive spectra of several southern OB-type binaries, we derived periods for three SB2 spectroscopic binaries, HD 97166, HD 115455, and HD 123590, and two SB1 systems, HD 130298 and HD 163892. It was also possible to use new FEROS spectra to improve the parameters of the known binaries, KX Vel and HD 167263. For KX Vel, we determined a dynamic mass of the primary of 16.8 M${}_{\odot }$, while the evolutionary model suggests a higher value of 20.2 M${}_{\odot }$. We derived an improved period for HD 167263, and in its spectra, we recognized contributions of both of its interferometric components.

arXiv comment9 pages, A&A accepted

References in corpus (11)

• Grids of stellar models with rotation - I. Models from 0.8 to 120 Msun at solar metallicity (Z = 0.014)
• A new calibration of stellar parameters of Galactic O stars
• A Grid of NLTE Line-Blanketed Model Atmospheres of Early B-type Stars
• The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars
• The Galactic O-Star Spectroscopic Survey. I. Classification System and Bright Northern Stars in the Blue-Violet at R~2500
• A spectroscopic survey on the multiplicity of high-mass stars
• A Galactic O-Star Catalog
• A new method for an objective, ${\chi }^2$-based spectroscopic analysis of early-type stars
• Atmospheric parameters and rotational velocities for a sample of Galactic B-type supergiants
• Spectroscopy and Time Variability of Absorption Lines in the Direction of the Vela Supernova Remnant
• The Projected Rotational Velocity Distribution of a Sample of OB stars from a Calibration based on Synthetic He I lines

Cited by in corpus (6)

• Identifying quiescent compact objects in massive Galactic single-lined spectroscopic binaries
• A new method for an objective, ${\chi }^2$-based spectroscopic analysis of early-type stars
• Chemical abundances of fast-rotating massive stars. I. Description of the methods and individual results
• Determination of the Galactic Rotation Curve from OB Stars
• Unveiling Vela -- Variability of Interstellar Lines in the Direction of the Vela Supernova Remnant III. Na D and Ca II K
• MONOS: Multiplicity Of Northern O-type Spectroscopic systems. III. New orbits and Gaia TESS analysis for 10 SB2E systems