204 citations · 533 across the 12 of their papers we have counts for
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The most luminous stars in the Galaxy and the Magellanic Clouds
Wolf-Rainer Hamann, Andreas Barniske, Adriane Liermann +3
Some of the Wolf-Rayet stars are found to have very high bolometric luminosities (more than 1000000 solar). We employ the Potsdam Wolf-Rayet (PoWR) model atmospheres for their spec…
X-rays, clumping and stellar wind structures
Lidia Oskinova, Wolf-Rainer Hamann, Richard Ignace +1
X-ray emission is ubiquitous among massive stars. In the last decade, X-ray observations revolutionized our perception of stellar winds but opened a Pandora's box of urgent problem…
The Quintuplet Cluster II. Analysis of the WN stars
A. Liermann, W. -R. Hamann, L. M. Oskinova +2
Based on -band integral-field spectroscopy, we analyze four Wolf-Rayet stars of the nitrogen sequence (WN) found in the inner part of the Quintuplet cluster. All WN stars (WR102…
Discovery of X-ray Emission from the Wolf-Rayet star WR142 of oxygen subtype
L. M. Oskinova, W. -R. Hamann, A. Feldmeier +2
We report the discovery of weak yet hard X-ray emission from the Wolf-Rayet (WR) star WR142 with the XMM-Newton X-ray telescope. Being of spectral subtype WO2, WR142 is a massive s…