Wind Mass-loss Rates of Stripped Stars Inferred from Cygnus X-1

Coenraad J. Neijssel; Serena Vinciguerra; Alejandro Vigna-Gomez; Ryosuke Hirai; James C. A. Miller-Jones; Arash Bahramian; Thomas J. Maccarone; Ilya Mandel

doi:10.3847/1538-4357/abde4a

Wind Mass-loss Rates of Stripped Stars Inferred from Cygnus X-1

Coenraad J. Neijssel, Serena Vinciguerra, Alejandro Vigna-Gomez, Ryosuke Hirai, James C. A. Miller-Jones, Arash Bahramian, Thomas J. Maccarone, Ilya Mandel^*

^*Corresponding author for this work

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Research output: Contribution to journal › Journal article › Research › peer-review

38 Citations (Scopus)

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.

Original language	English
Article number	118
Journal	Astrophysical Journal
Volume	908
Issue number	2
Number of pages	9
ISSN	0004-637X
DOIs	https://doi.org/10.3847/1538-4357/abde4a
Publication status	Published - Feb 2021

Keywords

Stellar mass black holes
High mass x-ray binary stars
Stellar winds

Access to Document

10.3847/1538-4357/abde4a

https://arxiv.org/pdf/2102.09092.pdf

Cite this

Wind Mass-loss Rates of Stripped Stars Inferred from Cygnus X-1. / Neijssel, Coenraad J.; Vinciguerra, Serena; Vigna-Gomez, Alejandro; Hirai, Ryosuke; Miller-Jones, James C. A.; Bahramian, Arash; Maccarone, Thomas J.; Mandel, Ilya.

In: Astrophysical Journal, Vol. 908, No. 2, 118, 02.2021.

Research output: Contribution to journal › Journal article › Research › peer-review

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AU - Vigna-Gomez, Alejandro

AU - Hirai, Ryosuke

AU - Miller-Jones, James C. A.

AU - Bahramian, Arash

AU - Maccarone, Thomas J.

AU - Mandel, Ilya

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AB - 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.

KW - Stellar mass black holes

KW - High mass x-ray binary stars

KW - Stellar winds

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