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 …

The highly eccentric binary system Eta Carinae (η Car) shows numerous time-variable
emission and absorption features. These observational signatures are the result of …

Spectral observations of the massive colliding wind binary Eta Carinae show phase-
dependent variations, in intensity and velocity, of numerous helium emission and absorption …

We present the first 3D prints of output from a supercomputer simulation of a complex
astrophysical system, the colliding stellar winds in the massive (≳ 120 M⊙), highly eccentric …

We report on high-resolution spectroscopy of the 2009.0 spectroscopic event of η Carinae
collected via SMARTS observations using the CTIO 1.5 m telescope and echelle …

Este trabalho consiste de duas partes. A primeira envolve o estudo dos componentes
ejetados do quasar 3C 273, que foram acompanhados usando técnicas de VLBI em 2 cm …

We show that recent observations of He I and N II lines of $\eta $ Carinae may provide
support for an orbital orientation where the secondary star is closest to us at periastron …