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

ABSTRACT The Large Area Telescope (LAT) on board the Fermi Gamma-ray Space
Telescope detected a γ-ray source that is spatially consistent with the location of Eta …

In order to study the distribution of gas and ionizing radiation around η Car and their
implications for its likely companion star, we have examined high-excitation emission lines …

We reconstruct the evolution of η Car in the last two centuries under the assumption that the
two 19th century eruptions were triggered by periastron passages and through this …

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 The massive Wolf–Rayet stellar system HD 5980 in the Small Magellanic Cloud
entered a sudden and brief∼ 1–3 mag eruptive state in the mid-1990s. The cause of the …

Eta Carinae shows broad peaks in near-infrared (IR) JHKL photometry, roughly correlated
with times of periastron passage in the eccentric binary system. After correcting for secular …

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 …

Context. The colliding-wind binary η Carinae exhibits soft X-ray thermal emission that varies
strongly around the periastron passage. It has been found to have non-thermal emission …

We report on Hα spectroscopy of the 2009.0 spectroscopic event of η Carinae collected via
SMARTS observations using the Cerro Tololo Interamerican Observatory 1.5 m telescope …