Mass loss is a key process in the evolution of massive stars, and must be understood
quantitatively if it is to be successfully included in broader astrophysical applications such as …

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 …

We present new light curves and optical spectra for a number of extragalactic optical
transients or 'supernova impostors' related to giant eruptions of luminous blue variables …

We present a comprehensive study of the observational dependence of the mass-loss rate
in stationary stellar winds of hot massive stars on the metal content of their atmospheres …

Based on their relatively isolated environments, we argue that luminous blue variables
(LBVs) must be primarily the product of binary evolution, challenging the traditional single …

The high luminosity of Very Massive Stars (VMS) means that radiative forces play an
important, dynamical role both in the structure and stability of their stellar envelope, and in …

High-resolution long-slit spectra obtained with the Phoenix spectrograph on Gemini South
provide our most accurate probe of the three-dimensional structure of the Homunculus …

The observational consequences of the merger scenario for massive star formation are
explored and contrasted with the gradual accumulation of mass by accretion. In high-density …

We examine radiatively driven mass loss from stars near and above the Eddington limit.
Building on the standard CAK theory of driving by scattering in an ensemble of lines with a …

ABSTRACT We present new Hubble Space Telescope (HST) imaging photometry for the
site of the Type IIn supernova (SN) 2009ip taken almost a decade after explosion. The …