259 citations · 3.5k across the 83 of their papers we have counts for
3 papers · 1 filter
The rotation rates of massive stars: How slow are the slow ones?
J. O. Sundqvist, S. Simon-Diaz, J. Puls +1
Context: Rotation plays a key role in the life cycles of stars with masses above 8 Msun. Hence, accurate knowledge of the rotation rates of such massive stars is critical for under…
Constraints on porosity and mass loss in O-star winds from modeling of X-ray emission line profile shapes
Maurice A. Leutenegger, David H. Cohen, Jon O. Sundqvist +1
We fit X-ray emission line profiles in high resolution XMM-Newton and Chandra grating spectra of the early O supergiant Zeta Pup with models that include the effects of porosity in…
On magnetic inhibition of photospheric macro-turbulence generated in the iron-bump opacity zone of O-stars
J. O. Sundqvist, V. Petit, S. P. Owocki +3
Massive, hot OB-stars show clear evidence of strong macroscopic broadening (in addition to rotation) in their photospheric spectral lines. This paper examines the occurrence of suc…