000007430 001__ 7430
000007430 005__ 20250124114947.0
000007430 0247_ $$2DOI$$a10.1017/S1743921322003180
000007430 037__ $$aSCART-2025-0073
000007430 100__ $$aSana, H.
000007430 245__ $$aThe Nature of Unseen Companions in Massive Single-Line Spectroscopic Binaries
000007430 260__ $$c2024
000007430 520__ $$aMassive stars are predominantly found in binaries and higher order multiples. While the period and eccentricity distributions of OB stars are now well established across different metallicity regimes, the determination of mass-ratios has been mostly limited to double-lined spectroscopic binaries. As a consequence, the mass-ratio distribution remains subject to significant uncertainties. Open questions include the shape and extent of the companion mass-function towards its low-mass end and the nature of undetected companions in single-lined spectroscopic binaries. In this contribution, we present the results of a large and systematic analysis of a sample of over 80 single-lined O-type spectroscopic binaries (SB1s) in the Milky Way and in the Large Magellanic Cloud (LMC). We report on the developed methodology, the constraints obtained on the nature of SB1 companions, the distribution of O star mass-ratios at LMC metallicity and the occurrence of quiescent OB+black hole binaries.
000007430 594__ $$aNO
000007430 700__ $$aAbdul-Masih, M.
000007430 700__ $$aBanyard, G.
000007430 700__ $$aBodensteiner, J.
000007430 700__ $$aBowman, D. M.  
000007430 700__ $$aDsilva, K.
000007430 700__ $$aEldridge, C. 
000007430 700__ $$aFabry, M.
000007430 700__ $$aFrost, A. J. 
000007430 700__ $$aHawcroft, C.
000007430 700__ $$aJanssens, S.
000007430 700__ $$aMahy, L.
000007430 700__ $$aMarchant, P.
000007430 700__ $$aLanger, N.
000007430 700__ $$aVan Reeth, T.
000007430 700__ $$aSen, K.
000007430 700__ $$aShenar, T.
000007430 773__ $$c267-272$$pMassive Stars Near and Far, Edited by J. Mackey, J.S. Vink and N. St-Louis. Proceedings of the International Astronomical Union, held 8-13 May 2022 in Ballyconnell, Ireland. Cambridge University Press, 2024$$v361$$y2024
000007430 8560_ $$flaurent.mahy@ksb-orb.be
000007430 8564_ $$s696396$$uhttp://publi2-as.oma.be/record/7430/files/Sana_IAU361.pdf
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000007430 905__ $$apublished in
000007430 980__ $$aNONREF