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Model of Dusty Envelope of ETA Carinae

  • A.B. Men’shchikov (a1), B.M. Shustov (a1) and A.V. Tutukov (a1)

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Eta Carinae is a well-known example of a star with a massive circumstellar nebulous shell. The shell is regarded as a remnant of a great outburst of the star in the last century. η Car parameters remain to be a matter of scientific debates: most often investigators revise stellar temperature T, mass loss rate , the velocity of outflow V. We have worked out several numerical evolutionary models of η Car envelope (the homunculus) paying attention to the dependence on the mentioned parameters. The dependence on the parameters of grain evolution was also considered. For a representative model we fixed: V=500km/s; M=10−1 M/y during the first 15 years of the outburst and slowly decreasing in time, T=20000K. A coupled two-components hydrodynamical and radiation model transfer problem has been solved.

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Model of Dusty Envelope of ETA Carinae

  • A.B. Men’shchikov (a1), B.M. Shustov (a1) and A.V. Tutukov (a1)

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