133 citations · 422 across the 19 of their papers we have counts for
8 papers · 1 filter
Distinct Population of Wolf-Rayet Stars in the Low-Metallicity Galaxy NGC 6822. Quantitative analysis of optical and UV spectra of the complete sample
R. Trigg, L. M. Oskinova, W. -R. Hamann +9
Context: Wolf-Rayet (WR) stars are particularly rare in low-metallicity galaxies and remain poorly understood. Detailed studies of the presumably complete population of WR stars in…
Extensive Observational Evidence for Massive Star Stellar Wind Variability at Low Metallicities: implications for mass-loss rate determination
Timothy N. Parsons, Raman K. Prinja, Derck L. Massa +1
Mass-loss from massive stars is fundamental to stellar and galactic evolution and enrichment of the interstellar medium. Reliable determination of mass-loss rate is dependent upon…
Optically-thick Structure in Early B Type Supergiant Stellar Winds at Low Metallicities
Timothy N. Parsons, Raman K. Prinja, Matheus Bernini-Peron +6
Accurate determination of mass-loss rates from massive stars is important to understanding stellar and galactic evolution and enrichment of the interstellar medium. Large-scale str…
On the Origin of Wind Line Variability in O Stars
D. Massa, R. K. Prinja
We analyze 10 UV time series for 5 stars which fulfill specific sampling and spectral criteria to constrain the origin of large-scale wind structure in O stars. We argue that excit…
CIR Modulation of the X-ray Flux from the O7.5 III(n)((f)) Star xi Persei?
D. Massa, L. Oskinova, A. W. Fullerton +5
We analyze a 162 ks HETG Chandra observation of the O7.5 III(n)((f)) star xi Per, together with contemporaneous H alpha observations. The X-ray spectrum of this star is similar to…
A Report on the X-ray Properties of the tau Sco Like Stars
Richard Ignace, Lidia Oskinova, Derck Mass
An increasing number of OB stars have been shown to possess magnetic fields. Although the sample remains small, it is surprising that the magnetic and X-ray properties of these sta…