328 citations · 3.4k across the 37 of their papers we have counts for
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Light-travel-time diagnostics in early Supernova spectra: substantial mass loss of the IIb progenitor of SN 2013cu through a superwind
G. Gräfener, J. S. Vink
The progenitors of type-IIb supernovae (SNe) are believed to have lost their H-rich envelopes almost completely in the direct pre-SN phase. Recently the first 'flash spectrum' of a…
Discovery of the massive overcontact binary VFTS 352: Evidence for enhanced internal mixing
L. A. Almeida, H. Sana, S. E. de Mink +15
The contact phase expected to precede the coalescence of two massive stars is poorly characterized due to the paucity of observational constraints. Here we report on the discovery…
Narrow He II emission in star-forming galaxies at low metallicity. Stellar wind emission from a population of Very Massive Stars
G. Gräfener, J. S. Vink
In a recent study star-forming galaxies with HeII emission between redshifts 2 and 4.6 have been found to occur in two modes, distinguished by the width of their HeII emission line…
The evolution of rotating very massive stars with LMC composition
K. Köhler, N. Langer, A. de Koter +8
We present a dense model grid with tailored input chemical composition appropriate for the Large Magellanic Cloud. We use a one-dimensional hydrodynamic stellar evolution code, whi…