Back to Search Start Over

The Nature of Unseen Companions in Massive Single-Line Spectroscopic Binaries.

Authors :
Sana, Hugues
Abdul-Masih, Michael
Banyard, Gareth
Bodensteiner, Julia
Bowman, Dominic M.
Dsilva, Karan
Eldridge, C.
Fabry, Matthias
Frost, Abigail J.
Hawcroft, Calum
Janssens, Soetkin
Mahy, Laurent
Marchant, Pablo
Langer, Norbert
Van Reeth, Timothy
Sen, Koushik
Shenar, Tomer
Source :
Proceedings of the International Astronomical Union; May2022, Vol. 18 Issue S361, p267-272, 6p
Publication Year :
2022

Abstract

Massive stars are predominantly found in binaries and higher order multiples. While the period and eccentricity distributions of OB stars are now well established across different metallicity regimes, the determination of mass-ratios has been mostly limited to double-lined spectroscopic binaries. As a consequence, the mass-ratio distribution remains subject to significant uncertainties. Open questions include the shape and extent of the companion mass-function towards its low-mass end and the nature of undetected companions in single-lined spectroscopic binaries. In this contribution, we present the results of a large and systematic analysis of a sample of over 80 single-lined O-type spectroscopic binaries (SB1s) in the Milky Way and in the Large Magellanic Cloud (LMC). We report on the developed methodology, the constraints obtained on the nature of SB1 companions, the distribution of O star mass-ratios at LMC metallicity and the occurrence of quiescent OB+black hole binaries. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
17439213
Volume :
18
Issue :
S361
Database :
Complementary Index
Journal :
Proceedings of the International Astronomical Union
Publication Type :
Academic Journal
Accession number :
179496142
Full Text :
https://doi.org/10.1017/S1743921322003180