Statistics – Computation
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...148..183g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 148, no. 1, July 1985, p. 183-190.
Statistics
Computation
52
Cool Stars, Cosmic Dust, Stellar Envelopes, Stellar Winds, Supergiant Stars, Carbon, Computational Astrophysics, Condensing, Expansion, Flow Velocity, Supersonic Flow, Terminal Velocity
Scientific paper
Models are calculated for dust condensation in stellar winds around cool supergiants for a carbon rich element mixture. The coupled system of equations for grain formation and growth and for a spherically expanding stationary flow is solved numerically. The supersonic wind is assumed to be driven by dust condensation, i.e., a solution is constructed which passes through the singular point of the system. Results are presented for a supergiant. The calculated terminal velocities of the supersonic flow range between 8 km/s and 29 km/s, which fit well to typical observed expansion velocities in circumstellar dust shells.
Gail Hans-Peter
Sedlmayr Erwin
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