ABSTRACT The interacting binary Eta Carinae remains one of the most enigmatic massive
stars in our Galaxy despite over four centuries of observations. In this work, its light curve …

Context. The periodicity of 5.5 years for some observational events occurring in η Carinae
manifests itself across a large wavelength range and has been associated with its binary …

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 …

A full description of the 5.5-yr low excitation events in η Carinae is presented. We show that
they are not as simple and brief as previously thought, but a combination of two components …

In late 2006, ground-based photometry of η Car plus the Homunculus showed an
unexpected decrease in its integrated apparent brightness, an apparent reversal of its long …

We analyze interferometric measurements of the luminous blue variable Eta Carinae with
the goal of constraining the rotational velocity of the primary star and probing the influence of …

The binary η Carinae is the closest example of a very massive star, which may have formed
through a merger during its Great Eruption in the mid-19th century. We aimed to confirm and …

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 …

The highly eccentric binary system, η Car, provides clues to the transition of massive stars
from hydrogen–burning via the CNO cycle to a helium–burning evolutionary state. The fast …

We present new observations of η Carinae, strongly suggesting that it is a binary system.
High dispersion measurements of the broad Paγ emission line show periodic radial velocity …