High-Resolution Studies of Eta Carinae's Ejecta and Stellar Wind

Weigelt, G., Kraus, S.

Eta carinae and the Supernova Imposters. Astrophysics and Space Science Library, Vol. 384. Springer Science+Business Media, LLC, p. 129 (2012)


Hubble Space Telescope observations and interferometric measurements provide unique insights into the small-scale structure of η Car's circumstellar ejecta and its extreme, optically thick, aspherical stellar wind. We discuss speckle interferometric imaging and HST images of η Car's ejecta in the inner 1 arcsec. We also review the first infrared long-baseline spectro-interferometry with high spatial resolution of 5 mas and high spectral resolution. Infrared interferometry allows us, for the first time, to study the strong wavelength dependence of η Car's non-spherical wind structure within emission lines.

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