12 papers
The winds of Luminous Blue Variables and the Mass of AG Car
Jorick S. Vink, Alex de Koter
We present radiation-driven wind models for Luminous Blue Variables (LBVs) and predict their mass-loss rates. A comparison between our predictions and the observations of AG Car sh…
Mass-loss predictions and stellar masses of early-type stars
Alex de Koter, Jorick S. Vink
We show that the stellar masses implied by our predictions of the wind properties of massive stars are in agreement with masses derived from evolution theory and from direct measur…
Hydrogen infrared recombination lines as diagnostic tool for hot star wind geometry
A. Lenorzer, A. de Koter, L. B. F. M. Waters
We have analysed the infrared hydrogen recombination lines of a sample of well studied hot massive stars observed with the Infrared Space Observatory. Our sample contains stars fro…
The gamma Velorum binary system. II. WR stellar parameters and the photon loss mechanism
Orsola De Marco, W. Schmutz, P. A. Crowther +4
In this paper we derive stellar parameters for the Wolf-Rayet star in the gamma Velorum binary system (WR11), from a detailed non-LTE model of its optical and infrared spectra. Com…
The infrared spectrum of the Be star gamma Cassiopeiae
S. Hony, L. B. F. M. Waters, P. A. Zaal +6
We present the 2.4-45 micrometer ISO-SWS spectrum of the Be star gamma Cas (B0.5 IVe). The spectrum is characterised by a thermal continuum which can be well fit by a power-law S_n…
Mass-loss rates and luminosity functions of dust-enshrouded AGB stars and red supergiants in the LMC
Jacco Th. van Loon, M. A. T. Groenewegen, A. de Koter +5
A radiative transfer code is used to model the spectral energy distributions of 57 mass-losing Asymptotic Giant Branch (AGB) stars and red supergiants (RSGs) in the Large Magellani…