Understanding massive stars is essential for a variety of branches of astronomy including
galaxy and star cluster evolution, nucleosynthesis and supernovae, pulsars, and black …

The striking broad emission line spectroscopic appearance of Wolf-Rayet (WR) stars has
long defied analysis, owing to the extreme physical conditions within their line-and …

Extensive modifications to the non-LTE radiative transfer code of Hillier have been made in
order to improve the spectroscopic analysis of stars with stellar winds. The main …

The VIIth catalogue of galactic PopulationI Wolf–Rayet stars provides improved coordinates,
spectral types and bv photometry of known WR stars and adds 71 new WR stars to the …

We suggest that the mass lost during the evolution of very massive stars may be dominated
by optically thick, continuum-driven outbursts or explosions, instead of by steady line-driven …

Context. Very massive stars pass through the Wolf-Rayet (WR) stage before they finally
explode. Details of their evolution have not yet been safely established, and their physics …

Using a significantly revised non-LTE radiative transfer code that allows for the effects of line
blanketing by He, C, O, Si, and Fe, we have performed a detailed analysis of the Galactic …

Abstract We present non-Local Thermodynamic Equilibrium (LTE) time-dependent radiative-
transfer simulations of supernova (SN) IIb/Ib/Ic spectra and light curves, based on∼ 1051 …

OB associations are unbound groups of young stars made prominent by their bright OB
members, and have long been thought to be the expanded remnants of dense star clusters …

A three-dimensional classification for WN stars is presented using (1) the He ii 5411/He i
5875 ratio as a primary indicator of ionization,(2) FWHM 4686 and EW 5411 as indicators of …