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 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 …

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 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 …

ABSTRACT We report new Hubble Space Telescope/Space Telescope Imaging
Spectrograph observations that map the high-ionization forbidden line emission in the inner …

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 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 …

The periodic spectroscopic events in η Carinae are now well established and occur near the
periastron passage of two massive stars in a very eccentric orbit. Several mechanisms have …

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

Context. η Carinae is a colliding wind binary hosting two of the most massive stars and
featuring the strongest wind collision mechanical luminosity. The wind collision region of this …