Envelope ejection to form planetary nebulae

Details Envelope ejection to form planetary nebulae Envelope ejection to form planetary nebulae

Mar 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...196..559s&link_type=abstract

Astrophysical Journal, vol. 196, Mar. 1, 1975, pt. 1, p. 559-563.

Astronomy and Astrophysics

Astrophysics

15

Planetary Nebulae, Stellar Envelopes, Stellar Mass Ejection, Supergiant Stars, Astronomical Models, Late Stars, Stellar Atmospheres, Stellar Luminosity, Stellar Structure

Scientific paper

Previous calculations, in which the luminosity is about 0.5 times the critical luminosity, are extended to higher luminosities to determine whether partial, small-scale ejections of mass continue to be the general result. The 0.2 solar-mass envelope of a 1.2 solar-mass star was perturbed by raising the interior boundary condition luminosity 10 percent to approximately the critical luminosity. After a brief period of oscillation the entire envelope was ejected. The numerical methods include time-dependent convection (not necessarily efficient) and a simplified version of a spherically extended atmosphere.

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