The ``Ghost Shell'': Discovery of the Forward Shock from Colliding Winds about Eta Carinae

Details The ``Ghost Shell'': Discovery of the Forward Shock from Colliding Winds about Eta Carinae The ``Ghost Shell'': Discovery of the Forward Shock from Colliding Winds about Eta Carinae

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003rmxac..15...70d&link_type=abstract

Winds, Bubbles, and Explosions: a conference to honor John Dyson, Pátzcuaro, Michoacán, México, September 9-13, 2002 (Eds. S. J.

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2

Circumstellar Matter, Ism: Jets And Outflows, Stars: Variables: Other

Scientific paper

We report on the newly discovered ``Ghost Shell'' around eta Carinae. We have detected a high-velocity ( ~ - 850 km /s), spatially extended, narrow emission feature lying in front of the southeast lobe of eta Carinae's homunculus. This feature has the speed of a high-velocity shock but the spectrum of a low-velocity shock. We propose that the Ghost Shell is the forward shock between the fast stellar wind of the great eruption of 1842 and the older, slow, massive wind. This discovery is described in more detail in Currie, Dorland, & Kaufer (2002).

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