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 high-precision X-ray monitoring observations in the 0.4–10 keV band of the
luminous, long-period colliding wind binary Eta Carinae, up to and through its most recent X …

We report on Swift X-ray Telescope observations of Eta Carinae (η Car), an extremely
massive, long-period, highly eccentric binary obtained during the 2014.6 X-ray …

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 …

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 …

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 …

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 …

We show that recent observations of He i and N ii lines of η Carinae may provide support for
an orbital orientation where the secondary star is closest to us at periastron passages. This …

Eta Carinae's spectroscopic events (periastron passages) in 2003, 2009, and 2014 differed
progressively. He ii λ4687 and nearby N ii multiplet 5 have special significance because …