200 citations · 2.4k across the 50 of their papers we have counts for
51 papers
Helium-like X-ray line complexes show that the hottest plasma on the O supergiant zeta Puppis is in its wind
David H. Cohen, Ariel M. Overdorff, Maurice A. Leutenegger +3
We present an analysis of Chandra grating spectra of key helium-like line complexes to put constraints on the location with respect to the photosphere of the hottest ($T \gtrsim{6…
Chandra grating spectroscopy of embedded wind shock X-ray emission from O stars shows low plasma temperatures and significant wind absorption
David H. Cohen, Winter Parts, Graham M. Doskoch +4
We present a uniform analysis of six examples of embedded wind shock (EWS) O star X-ray sources observed at high resolution with the Chandra grating spectrometers. By modeling both…
Chandra spectral measurements of the O supergiant Puppis indicate a surprising increase in the wind mass-loss rate over 18 years
David H. Cohen, Jiaming Wang, Véronique Petit +4
New long Chandra grating observations of the O supergiant Pup show not only a brightening of the x-ray emission line flux of 13 per cent in the 18 years since Chandra's first o…
MOBSTER: Establishing a Picture of Magnetic Massive Stars as a Population
Alexandre David-Uraz, Coralie Neiner, James Sikora +12
Magnetic massive and intermediate-mass stars constitute a separate population whose properties are still not fully understood. Increasing the sample of known objects of this type w…
Magnetic OB[A] Stars with TESS: probing their Evolutionary and Rotational properties -- The MOBSTER Collaboration
A. David-Uraz, C. Neiner, J. Sikora +14
In this contribution, we present the MOBSTER Collaboration, a large community effort to leverage high-precision photometry from the Transiting Exoplanet Survey Satellite (\textit{T…
KELT-24b: A 5M Planet on a 5.6 day Well-Aligned Orbit around the Young V=8.3 F-star HD 93148
Joseph E. Rodriguez, Jason D. Eastman, George Zhou +76
We present the discovery of KELT-24 b, a massive hot Jupiter orbiting a bright (V=8.3 mag, K=7.2 mag) young F-star with a period of 5.6 days. The host star, KELT-24 (HD 93148), has…