Three-dimensional adaptive mesh refinement hydrodynamical simulations of the wind–wind
collision between the enigmatic supermassive star η Car and its mysterious companion star …

We report continued monitoring of the superluminous binary system η Car by the
Proportional Counter Array on the Rossi X-ray Timing Observatory (RXTE) through the 2009 …

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 …

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 …

Context. The most massive binary system Eta Carinae has been recently established as a
gamma-ray source by the AGILE and Fermi-LAT detectors. The high energy spectrum of this …

Stellar wind-emission features in the spectrum of eta Carinae have decreased by factors of
1.5–3 relative to the continuum within the last 10 years. We investigate a large data set from …

ABSTRACT We monitored Eta Carinae with the Hubble Space Telescope WFPC2 and
Gemini GMOS throughout the 2009 spectroscopic event, which was expected to differ from …

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 …

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 …

Major stellar-wind emission features in the spectrum of η Car have recently decreased by
factors of order 2 relative to the continuum. This is unprecedented in the modern …