The paper presents a new method for deriving stellar masses and distances using the theory of radiatively driven winds as presented by Kudritzki et al. (1989)...
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PublicationNLTE analysis of massive OB stars in open clusters
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PublicationObservations of massive OB stars
Preliminary results are presented of spectroscopic analysis of ten young stars in OB associations using high resolution spectra and NLTE calculations. From the...
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TalkOn the evolution of rotation and magnetism from solar-like stars to red giants using Kepler data
More than 40 years ago, Skumanich (1972) showed how rotation and magnetic activity decreased with the age of a solar-like star. While this result was based on...
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PublicationOn the evolution of supernova remnants. III - Off-centred supernova explosions in pre-existing wind-driven bubbles
It is shown that supernova explosions inside wind-driven cavities created by progenitors moving across the ambient medium result in a large diversity of remnant...
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TalkOn the extreme properties of massive galaxies at high redshifts
Massive (≥ 1011 M⊙) galaxies at high redshift (z ≥ 1.5) remain mysterious objects. Their extremely small sizes (effective radii of 1-2 kpc) make them as dense...
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TalkOn the fate of the most massive stars
Radiation-driven mass loss largely determines the life expectancy of massive stars. I will present our most recent mass-loss predictions for massive stars...
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PublicationOn the massive star-forming capacity of molecular clouds
Assuming that photoionization is the self-limiting process for continued star formation, we estimate the maximum number of massive (OB) stars that can form...
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PublicationOn the O/Fe versus Fe/H relationship and the progenitors of type I supernovae
The new observational O/Fe versus Fe/H abundance relationship for halo stars is studied in terms of several models of chemical evolution for the solar...
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PublicationOn the search for transition zone lines in late A type stars
Observations of the 1400-1800 A region in late A type stars are presented, which were obtained using the IUE satellite at low and high resolution. The...