Mass loss is a key process in the evolution of massive stars, and must be understood
quantitatively if it is to be successfully included in broader astrophysical applications such as …

Non-degenerate stars of essentially all spectral classes are soft X-ray sources. Their X-ray
spectra have been important in constraining physical processes that heat plasma in stellar …

Context. Massive stars, although being important building blocks of galaxies, are still not
fully understood. This especially holds true for Wolf-Rayet (WR) stars with their strong mass …

The evolution of X-ray emission from young massive star clusters is modelled, taking into
account the emission from the stars as well as from the cluster wind. It is shown that the level …

Abstract The Wolf-Rayet WC7+ O4-5 binary WR 140 went through the periastron passage of
its 8 yr eccentric binary orbit in early 2001 as the two stars made their closest approach. Both …

Previous generations of X-ray observatories revealed a group of massive binaries that were
relatively bright X-ray emitters. This was attributed to emission of shock-heated plasma in the …

We have studied the X-ray point-source population of the 30 Doradus (30 Dor) star-forming
complex in the Large Magellanic Cloud using high spatial resolution X-ray images and …

We reassess the historical LX/L Bol relation for early-type stars from a comparison between
T-ReX, the Chandra ACIS X-ray survey of the Tarantula Nebula in the Large Magellanic …

We have spectroscopically identified 60 Galactic Wolf-Rayet (WR) stars, including 38
nitrogen types (WN) and 22 carbon types (WC). Using photometry from the Spitzer/GLIMPSE …

We report on the analysis of the Chandra-ACIS data of O, B, and WR stars in the young
association Cyg OB2. X-ray spectra of 49 O-stars, 54 B-stars, and 3 WR-stars are analyzed …