Models of transition regions in hybrid stars

Details Models of transition regions in hybrid stars Models of transition regions in hybrid stars

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301..650b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 15, 1986, p. 650-663.

Statistics

Computation

13

Giant Stars, Stellar Atmospheres, Stellar Mass Ejection, Stellar Models, Computational Astrophysics, Critical Point, Emission Spectra, Magnetohydrodynamic Waves, Supergiant Stars

Scientific paper

Models for the transition regions of six hybrid stars, four bright giants and two supergiants, are calculated. The models include mass loss and prescribe Alfven waves as the source of mechanical energy. The momentum and energy deposition rates required at each level of the atmosphere are evaluated. The final models for all six stars have mass loss rates lying below the current VLA upper limits by factors of two to ten, and have densities which agree with those derived by density-sensitive line ratios. The density vs. temperature structure in Alpha TrA agree well with that derived by Hartmann et al. (1985). Wave amplitudes and magnetic field strengths are derived as functions of height, and the amplitudes are found to agree well with the observed line widths in Alpha TrA.

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