We use recent observations of the He i λ10 830 Å absorption line and 3D hydrodynamical
numerical simulations of the winds collision to strengthen the case for an orientation of the …

We propose an explanation for the puzzling appearance of a wide blue absorption wing in
the He iλ10830 Å P Cygni profile of the massive binary star η Car several months before …

ABSTRACT η Carinae is an extremely luminous and energetic colliding-wind binary. The
combination of its orbit and orientation, with respect to our line of sight, enables direct …

We examine a variety of observations that shed light on the orientation of the semimajor axis
of the η Carinae massive binary system. Under several assumptions, we study the following …

The exact nature of η Carinae is still an open issue. Strict periodicity in the light curves at
several wavelengths seem to point to a binary system, but the observed radial velocities …

We have analyzed high spatial, moderate spectral resolution observations of η Carinae (η
Car) obtained with the STIS from 1998.0 to 2004.3. The data were obtained at discrete times …

We modelled the He iiλ4686 line profiles observed in the η Carinae binary system close to
the 2003.5 spectroscopic event, assuming that they were formed in the shocked gas that …

We report near-infrared spectroscopic observations of the Eta Carinae massive binary
system during 2008–2009 using the CRIRES spectrograph mounted on the 8 m UT 1 Very …

We analyze velocity profiles of the X-ray spectral lines emitted by the η Carinae (η Car)
stellar binary at four epochs, just before the X-ray minimum (associated with periastron) and …

Spectral observations of the massive colliding wind binary Eta Carinae show phase-
dependent variations, in intensity and velocity, of numerous helium emission and absorption …