63 citations · 110 across the 4 of their papers we have counts for
4 papers
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…
The Quintuplet Cluster I. A K-band spectral catalog of stellar sources
A. Liermann, W. -R. Hamann, L. M. Oskinova
Three very massive clusters are known to reside in the Galactic Center region, the Arches cluster, the Quintuplet cluster and the Central parsec cluster. We obtained spectroscopic…
Puzzling X-rays from the new colliding wind binary WR65
L. M. Oskinova, W. -R. Hamann
We report the discovery of variability in the X-ray emission from the Wolf-Rayet type star WR 65. Using archival Chandra data spanning over 5 yr we detect changes of the X-ray flux…
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…