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 …

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 continue to explore the accretion model of the massive binary system η Car by studying
the anomalously high He II λ4686 line. The line appears just before periastron and …

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 describe and analyze Hubble Space Telescope (HST) observations of transient
emission near 4680 Å in η Car, reported earlier by Steiner & Damineli. If, as seems …

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 analyze spatially resolved spectroscopic observations of the Eta Carinae binary system
obtained with the Hubble Space Telescope/STIS. Eta Car is enshrouded by the dusty …

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 …

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 …

We have monitored the massive binary star η Carinae with the CTIO/Small and Moderate
Aperture Research Telescope System 1.5 m telescope and CHIRON spectrograph from the …