The final evolution of stars in the mass range 70–140${\text {}}{M} _ {\odot} $ is explored.
Depending upon their mass loss history and rotation rates, these stars will end their lives as …

Luminous Blue Variables are massive evolved stars, here we introduce this outstanding
class of objects. Described are the specific characteristics, the evolutionary state and what …

We present multi-epoch photometry and spectroscopy of a light echo from η Carinae's 19th
century Great Eruption. This echo's light curve shows a steady decline over a decade …

Together with accretion and evolution, orientation is one of the three main drivers in the
grand unification of active galactic nuclei (AGNs). Being unresolved, determining the true …

Doppler spectroscopy is a powerful tool for discovering and characterizing exoplanets. For
decades, the standard approach to extracting radial velocities (RVs) has been to cross …

We present two-dimensional (2D) radiative transfer modelling of the Eta Carinae binary
system accounting for the presence of a wind–wind collision (WWC) cavity carved in the …

Recent work suggests that the mass-loss rate of the primary star ηA in the massive colliding
wind binary η Carinae dropped by a factor of 2–3 between 1999 and 2010. We present …

A core-collapse (CC) supernova (SN) of Type IIn is dominated by the interaction of SN ejecta
with the circumstellar medium (CSM). Some SNe IIn (eg SN 2006jd) have episodes of re …

Context. The upper stellar mass limit is a fundamental parameter for simulations of star
formation, galactic chemical evolution, and stellar feedback. An empirical bound on this …

ABSTRACT Eta Carinae (η Car) is an extremely massive binary system in which rapid
spectrum variations occur near periastron. Most notably, near periastron the He ii λ4686 line …