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 …

We report on Swift X-ray Telescope observations of Eta Carinae (η Car), an extremely
massive, long-period, highly eccentric binary obtained during the 2014.6 X-ray …

Infrared observations of the dusty, massive Homunculus Nebula around the luminous blue
variable η Carinae are crucial to characterize the mass-loss history and help constrain the …

Context. The mass loss from massive stars is not understood well. η Carinae is a unique
object for studying the massive stellar wind during the luminous blue variable phase. It is …

Context. Eta Carinae is a highly eccentric, massive binary system (semimajor axis~ 15.5 au)
with powerful stellar winds and a phase-dependent wind-wind collision (WWC) zone. The …

ABSTRACT SN2011ht has been described both as a true supernova (SN) and as an
impostor. In this paper, we conclude that it does not match some basic expectations for a …

Eta Carinae is a massive interacting binary system shrouded in a complex circumstellar
environment whose evolution is the source of the long-term brightening observed during the …

Aims. Every 5.5 years, η Car's light curve and spectrum change remarkably across all
observed wavelength bands. These so-called spectroscopic events are most likely caused …

FUV spectra of η Car, recorded across two decades with HST/STIS, document multiple
changes in resonant lines caused by dissipating extinction in our line of sight. The FUV flux …

The highly eccentric binary system Eta Carinae (η Car) shows numerous time-variable
emission and absorption features. These observational signatures are the result of …