2021
DOI: 10.48550/arxiv.2108.12918
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Confirming NGC 6231 as the parent cluster of the runaway high-mass X-ray binary HD 153919/4U 1700-37 with Gaia DR2

Vincent van der Meij,
Difeng Guo,
Lex Kaper
et al.

Abstract: Context. A significant fraction (10-20%) of the most massive stars move through space with a high (v 30 km s −1 ) velocity. One of the possible physical explanations is that a supernova in a compact binary system results in a high recoil velocity of the system. If the system remains bound, it can be subsequently observed as a spectroscopic binary (SB1), a high-mass X-ray binary, a compact binary, and finally a gravitational-wave event.Aims. If such a system is traced back to its parent cluster, binary evolutio… Show more

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“…In this context, it is very interesting to identify the parent stellar group of HMXBs in the Galaxy (see, e.g., Ankay et al 2001;van der Meij et al 2021). Recently, the HMXB candidate 1H11255-567 (µ 1 and µ 2 Cru, spectral types B2+B5, together with a possible neutron star) was traced back to the Lower-Centaurus-Crux group, where it could have originated up to ∼ 1.8 Myr ago in a supernova at 89−112 pc (Neuhäuser et al 2020).…”
Section: Introductionmentioning
confidence: 99%
“…In this context, it is very interesting to identify the parent stellar group of HMXBs in the Galaxy (see, e.g., Ankay et al 2001;van der Meij et al 2021). Recently, the HMXB candidate 1H11255-567 (µ 1 and µ 2 Cru, spectral types B2+B5, together with a possible neutron star) was traced back to the Lower-Centaurus-Crux group, where it could have originated up to ∼ 1.8 Myr ago in a supernova at 89−112 pc (Neuhäuser et al 2020).…”
Section: Introductionmentioning
confidence: 99%