26 citations · 37 across the 5 of their papers we have counts for
5 papers
Searching for a magnetic field in Wolf-Rayet stars using FORS2 spectropolarimetry
S. Hubrig, K. Scholz, W. -R. Hamann +5
To investigate if magnetic fields are present in Wolf-Rayet stars, we selected a few stars in the Galaxy and one in the Large Magellanic Cloud (LMC). We acquired low-resolution spe…
Analysis of the WN star WR 102c, its WR nebula, and the associated cluster of massive stars in the Sickle Nebula
M. Steinke, L. M. Oskinova, W. -R. Hamann +3
The massive Wolf-Rayet type star WR 102c is located near the Quintuplet Cluster - one of the three massive star clusters in the Galactic Center region. Previous studies indicated t…
X-raying clumped stellar winds
L. M. Oskinova, W. -R. Hamann, A. Feldmeier
X-ray spectroscopy is a sensitive probe of stellar winds. X-rays originate from optically thin shock-heated plasma deep inside the wind and propagate outwards throughout absorbing…
Are Wolf-Rayet winds driven by radiation?
G. Gräfener, W. -R. Hamann
Recent results with the Potsdam Wolf-Rayet (PoWR) models have shown that Wolf-Rayet mass loss can be explained by radiative wind driving. An inspection of the galactic WR sample, h…
The Masses of Late-Type WN Stars
G. Gräfener, W. -R. Hamann
We present recent results for galactic WNL stars, obtained with the new Potsdam Wolf-Rayet (PoWR) hydrodynamic model atmospheres. Based on a combination of stellar wind modeling an…