204 citations · 2.2k across the 111 of their papers we have counts for
Showing 2008 · astro-phShow all
3 papers · 2 filters
astro-ph2008★ 63 cited
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…
astro-ph2008★ 10 cited
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…
astro-ph2008★ 44 cited
Two extremely luminous WN stars in the Galactic center with circumstellar emission from dust and gas
A. Barniske, L. M. Oskinova, W. -R. Hamann
We study relatively isolated massive WN-type stars in the Galactic center. The K-band spectra of WR102ka and WR102c are exploited to infer the stellar parameters and to compute syn…