6 papers
Testing the theory of colliding winds: The periastron passage of 9 Sagittarii. II. Radio monitoring
R. Blomme, G. Rauw, D. Volpi +3
Colliding winds in massive-star binaries generate non-thermal radio emission and an increased X-ray emission. We study the radio emission of the non-thermal emitter 9 Sgr, which is…
HD3191, the high-mass X-ray binary that wasn't there
Gregor Rauw, Yaël Nazé, Piotr Antoni KoÅaczek-SzymaÅski
The rapidly rotating B1 IV:nn star HD3191 lies within the error box of a flaring Fermi gamma-ray source. Although the counterpart of the Fermi source is likely an active galaxy, HD…
Expanding stellar horizons with polarized light
J. Vandersnickt, R. Ochoa Armenta, V. Vanlaer +16
The polarization of light is a critically under-utilized, rich source of information in astronomy. For stars in particular, surface magnetism polarization that can be detected and…
The multi-faceted variability of HD 192639: Stochastic behaviour, regularities, and an exceptional mass-ejection event
Gregor Rauw, Yaël Nazé, Charles-Antoine Gilon
Spectroscopic and photometric variability is widespread among O-type supergiants. It is linked to various phenomena affecting the star and its circumstellar environment, thereby pr…
New Frontiers in the Study of Magnetic Massive Stars with the Habitable Worlds Observatory
Alexandre David-Uraz, Véronique Petit, Coralie Neiner +10
High-mass stars are notable for several reasons: they are characterized by strong winds, which inject momentum and enriched material into their surroundings, and die spectacularly…
The birth of Be star disks I. From localized ejection to circularization
J. Labadie-Bartz, A. C. Carciofi, A. C. Rubio +35
Classical Be stars are well known to eject mass, but the details governing the initial distribution and evolution of this matter into a disk are poorly constrained by observations.…