Mass Loss Near the Eddington Limit

Details Mass Loss Near the Eddington Limit Mass Loss Near the Eddington Limit

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..332..195b&link_type=abstract

The Fate of the Most Massive Stars, ASP Conference Series, Vol. 332, Proceedings of the conference held 23-28 May, 2004 in Grand

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate whether ``continuum'' opacity near the Fe peak at log T = 5.2 can produce the great eruption of η Car. Our simple estimates show that η Car can be super-Eddington (Γ >1) well below the photosphere. The super-Eddington region is sufficiently extended that it can drive a very large mass loss rate (a few 0.1 M&sun; yr-1) to well above the escape speed (several 100 km s-1). Furthermore once initiated, it appears plausible that continuum-driving may ``run away,'' approaching the photon tiring limit. This suggests continuum-driving may be capable of producing the great eruption.

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