58 citations · 138 across the 5 of their papers we have counts for
7 papers · 1 filter
On the Importance of the Interclump Medium for Superionization: O VI Formation in the Wind of Zeta Pup
J. Zsargo, D. J. Hillier, J. -C. Bouret +3
We have studied superionization and X-ray line formation in the spectra of Zeta Pup using our new stellar atmosphere code (XCMFGEN) that can be used to simultaneously analyze optic…
Quantitative analysis of resolved X-ray emission line profiles of O stars
David H. Cohen, Maurice A. Leutenegger, Richard H. D. Townsend
By quantitatively fitting simple emission line profile models that include both atomic opacity and porosity to the Chandra X-ray spectrum of Pup, we are able to explore the tra…
Resonance scattering in the X-ray emission line profiles of Zeta Puppis
M. A. Leutenegger, D. H. Cohen, S. M. Kahn +2
We present XMM-Newton Reflection Grating Spectrometer observations of pairs of X-ray emission line profiles from the O star Zeta Pup that originate from the same He-like ion. The t…
Evidence for the importance of resonance scattering in X-ray emission line profiles of the O star Puppis
Maurice A. Leutenegger, Stanley P. Owocki, Steven M. Kahn +1
We fit the Doppler profiles of the He-like triplet complexes of \ion{O}{7} and \ion{N}{6} in the X-ray spectrum of the O star Puppis, using XMM-Newton RGS data collected over $…
Wind signatures in the X-ray emission line profiles of the late O supergiant Orionis
David H. Cohen, Maurice A. Leutenegger, Kevin T. Grizzard +3
X-ray line profile analysis has proved to be the most direct diagnostic of the kinematics and spatial distribution of the very hot plasma around O stars. In this paper we apply sev…
Resolving X-ray sources from B-stars spectroscopically: The example of mu Lep
Ehud Behar, Maurice Leutenegger, Rami Doron +4
We present high-resolution X-ray observations of the chemically peculiar late-type B-star: mu Lep. However, we find spectroscopic and astrometric evidence, which show that the X-ra…