20 citations · 61 across the 7 of their papers we have counts for
4 papers · 1 filter
Variability in X-ray line ratios in helium-like ions of massive stars: the wind-driven case
R. Ignace, Z. Damrau, K. T. Hole
High spectral resolution and long exposure times are providing unprecedented levels of data quality of massive stars at X-ray wavelengths. A key diagnostic of the X-ray emitting pl…
An X-ray Study of Two B+B Binaries: AH Cep and CW Cep
R Ignace, K T Hole, L M Oskinova +1
AH Cep and CW Cep are both early B-type binaries with short orbital periods of 1.8~d and 2.7~d, respectively. All four components are B0.5V types. The binaries are also double-line…
A Coordinated X-ray and Optical Campaign on the Nearest Massive Eclipsing Binary, Delta Ori Aa: I. Overview of the X-ray Spectrum
M. F. Corcoran, J. S. Nichols, H. Pablo +22
We present an overview of four phase-constrained Chandra HETGS X-ray observations of Delta Ori A. Delta Ori A is actually a triple system which includes the nearest massive eclipsi…
Variability in X-ray line ratios in helium-like ions of massive stars: the radiation-driven case
K. T. Hole, R. Ignace
Line ratios in "fir" triplets of helium-like ions have proven to be a powerful diagnostic of conditions in X-ray emitting gas surrounding massive stars. Recent observations indicat…