Time-dependent corona models - Scaling laws

Details Time-dependent corona models - Scaling laws Time-dependent corona models - Scaling laws

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...226..203k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 226, no. 1, Dec. 1989, p. 203-208.

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Computational Astrophysics, Elliptical Galaxies, Scaling Laws, Stellar Coronas, Stellar Evolution, Stellar Models, Cool Stars, F Stars, Giant Stars, Stellar Atmospheres, Time Dependence

Scientific paper

Scaling laws are derived for the one-dimensional time-dependent Euler equations that describe the evolution of a spherically symmetric stellar atmosphere. With these scaling laws the results of the time-dependent calculations by Korevaar (1989) obtained for one star are applicable over the whole Hertzsprung-Russell diagram and even to elliptic galaxies. The scaling is exact for stars with the same M/R-ratio and a good approximation for stars with a different M/R-ratio. The global relaxation oscillation found by Korevaar (1989) is scaled to main sequence stars, a solar coronal hole, cool giants and elliptic galaxies.

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