Does Turbulence in the Iron Convection Zone Cause the Massive Outbursts of η Carinae?

Details Does Turbulence in the Iron Convection Zone Cause the Massive Outbursts of η Carinae? Does Turbulence in the Iron Convection Zone Cause the Massive Outbursts of η Carinae?

Feb 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...530l.103s&link_type=abstract

The Astrophysical Journal, Volume 530, Issue 2, pp. L103-L106.

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10

Convection, Stars: Individual: Constellation Name: &Eta, Carinae, Stars: Oscillations, Stars: Variables: Other: (Luminous Blue Variables), Turbulence

Scientific paper

Taken at face value, the observed properties of the central object in η Carinae suggest a very massive, hot main-sequence star, only slightly evolved. If this is so, the star's extraordinarily high steady rate of mass loss must dynamically perturb its outer envelope down to the iron convection zone, in which the kinetic energy associated with turbulent convection can be directly fed into mass ejection. Runaway mass loss, triggered by either internal (pulsational, rotational) or external (tidal) forcing, would produce a secular oscillation of the outer envelope. In either case, the oscillation is potentially able to account for the observed ~5 yr cycles of visual outbursts in η Car, including the giant eruption of 1843.

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