MOBSTER - IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically...
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status: published
Mapping luminous hot stars in the Galaxy
status: published
Unveiling the traits of massive young stellar objects through a multi-scale survey?
status: published
Red noise and pulsations in evolved massive stars
We examine high-cadence space photometry taken by the Transiting Exoplanet Survey Satellite (TESS) of a sample of evolved massive stars: 26 Wolf-Rayet stars (WRs) and eight luminous blue variables (LBVs) or candidate LBVs. To avoid confusion problems, only stars without bright Gaia neighbours and without evidence of bound companions are considered....
New X-ray detections of known Wolf-Rayet stars
Using XMM-Newton, we undertook a dedicated project to search for X-ray bright wind-wind collisions in 18 WR+OB systems. We complemented these observations with Swift and Chandra data sets, allowing for the study of two additional systems. We also improved the ephemerides, for these systems displaying photometric changes, using TESS, Kepler, and ASA...
A dearth of young and bright massive stars in the Small Magellanic Cloud
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status: published
Massive stars in the Small Magellanic Cloud : Evolution, rotation and surface abundances
We study the evolutionary and physical properties of evolved O stars in the Small Magellanic Cloud (SMC), with a special focus on their surface abundances to investigate the efficiency of rotational mixing as a function of age, rotation and global metallicity. We analyse the UV + optical spectra of thirteen SMC O-type giants and supergiants, using ...
A relation between the radial velocity dispersion of young clusters and their age: Evidence for hardening as the formati...
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status: published
Similar but different: the varied landscape of Onfp/Oef stars variability
The Oef category gathers rapidly rotating and evolved O-stars displaying a centrally reversed He II λ 4686 emission line. The origin of the variability of their photospheric and wind spectral lines is debated, with rotational modulation or pulsations as the main contenders. To shed new light on this question, we analysed high-quality and high-caden...
Investigation of variable Ap Stars in TESS continuous viewing zone
