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X-ray stellar population of the LMC
Yael Naze
In the study of stars, the high energy domain occupies a place of choice, since it is the only one able to directly probe the most violent phenomena: indeed, young pre-main sequenc…
High-resolution X-ray spectroscopy of Theta Car
Yael Naze, Gregor Rauw
Context : The peculiar hot star Theta Car in the open cluster IC2602 is a blue straggler as well as a single-line binary of short period (2.2d). Aims : Its high-energy properties a…
Spectroscopic and photometric variability of the O9.5Vp star HD93521
G. Rauw, M. De Becker, H. van Winckel +7
The line profile variability and photometric variability of the O9.5 Vp star HD93521 are examined in order to establish the properties of the non-radial pulsations in this star. Fo…
A binary signature in the non-thermal radio-emitter Cyg OB2 #9
Y. Naze, M. De Becker, G. Rauw +1
Aims: Non-thermal radio emission associated with massive stars is believed to arise from a wind-wind collision in a binary system. However, the evidence of binarity is still lackin…
HD148937: a multiwavelength study of the third Galactic member of the Of?p class
Y. Naze, N. R. Walborn, G. Rauw +3
Three Galactic O-type stars belong to the rare class of Of?p objects: HD108, HD191612, and HD148937. The first two stars show a wealth of phenomena, including magnetic fields and s…
The massive binary HD 152218 revisited: A new colliding wind system in NGC 6231
H. Sana, Y. Nazé, B. O'Donnell +2
We present the results of an optical and X-ray monitoring campaign on the short-period massive SB2 binary HD 152218. Combining our HiRes spectroscopic data with previous observatio…