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Journal Article

Wind mass-loss rates of stripped stars inferred from Cygnus X-1

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Vinciguerra,  Serena
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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2102.09092.pdf
(Preprint), 734KB

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Citation

Neijssel, C. J., Vinciguerra, S., Vigna-Gomez, A., Hirai, R., Miller-Jones, J. C. A., Bahramian, A., et al. (2021). Wind mass-loss rates of stripped stars inferred from Cygnus X-1. The Astrophysical Journal, 908(2): 118. doi:10.3847/1538-4357/abde4a.


Cite as: http://hdl.handle.net/21.11116/0000-0008-16E8-A
Abstract
Recent observations of the high-mass X-ray binary Cygnus X-1 have shown that both the companion star (41 solar masses) and the black hole (21 solar masses) are more massive than previously estimated. Furthermore, the black hole appears to be nearly maximally spinning. Here we present a possible formation channel for the Cygnus X-1 system that matches the observed system properties. In this formation channel, we find that the orbital parameters of Cygnus X-1, combined with the observed metallicity of the companion, imply a significant reduction in mass loss through winds relative to commonly used prescriptions for stripped stars.