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Wind-envelope interaction as the origin of the slow cyclic brightness variations of luminous blue variables
Luca Grassitelli, Norbert Langer, Jonathan Mackey +4
Luminous blue variables (LBVs) are hot, very luminous massive stars displaying large quasi-periodic variations in brightness, radius,and photospheric temperature, on timescales of…
Maximum Black Hole mass across Cosmic Time
Jorick S. Vink, Erin R. Higgins, Andreas A. C. Sander +1
At the end of its life, a very massive star is expected to collapse into a black hole. The recent detection of an 85 Msun black hole from the gravitational wave event GW 190521 app…
On the nature of massive helium star winds and Wolf-Rayet-type mass loss
Andreas A. C. Sander, Jorick S. Vink
The mass-loss rates of massive helium stars are one of the major uncertainties in modern astrophysics. Regardless of whether they were stripped by a binary companion or managed to…
Optical and infrared study of the obscured B[e] supergiant high-mass X-ray binary IGR J16318-4848
Francis Fortin, Sylvain Chaty, Andreas Sander
The supergiant High Mass X-ray Binary IGR J16318-4848 was the first source detected by the INTEGRAL satellite in 2003 and distinguishes itself by its high intrinsic absorption and…
Why binary interaction does not necessarily dominate the formation of Wolf-Rayet stars at low metallicity
T. Shenar, A. Gilkis, J. S. Vink +2
Classical Wolf-Rayet (WR) stars are massive, hydrogen depleted, post main-sequence stars that exhibit emission-line dominated spectra. For a given metallicity Z, stars exceeding a…
The stellar and wind parameters of six prototypical HMXBs and their evolutionary status
R. Hainich, L. M. Oskinova, J. M. Torrejón +7
High-mass X-ray binaries (HMXBs) are exceptional astrophysical laboratories that offer a rare glimpse into the physical processes that govern accretion on compact objects, massive-…