Abstract Since 2002, the far-ultraviolet (FUV) flux (1150–1680 Å) of Eta Carinae, monitored
by the Hubble Space Telescope/Space Telescope Imaging Spectrograph, has increased by …

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 …

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 …

Eta Carinae is a massive interacting binary system shrouded in a complex circumstellar
environment whose evolution is the source of the long-term brightening observed during the …

Abstract Eta Carinae (η Car) exhibits a unique set of P Cygni profiles with both broad and
narrow components. Over many decades, the spectrum has changed—there has been an …

η Car is one of the most luminous and massive stars in our Galaxy and is the brightest mid-
IR source in the sky outside our solar system. Since the late 1990s, the central source has …

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 …

Abstract Existing Hubble Space Telescope UV data offer many previously neglected clues to
η Car's behavior since 2000. Here we examine a subset of observations with diverse …

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 present two-dimensional (2D) radiative transfer modelling of the Eta Carinae binary
system accounting for the presence of a wind–wind collision (WWC) cavity carved in the …