Onset of rapid mass loss in cool giant stars - Magnetic field effects

Details Onset of rapid mass loss in cool giant stars - Magnetic field effects Onset of rapid mass loss in cool giant stars - Magnetic field effects

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...108..279m&link_type=abstract

Astronomy and Astrophysics, vol. 108, no. 2, Apr. 1982, p. 279-286.

Astronomy and Astrophysics

Astrophysics

17

Giant Stars, Magnetic Effects, Stellar Magnetic Fields, Stellar Mass Ejection, Stellar Models, Stellar Temperature, Coronal Loops, Hertzsprung-Russell Diagram, Solar Corona, Solar Wind, Steady State, Stellar Atmospheres

Scientific paper

The possibility that closed magnetic field loops exist in steady state in stellar atmospheres in the HR diagram is examined. A model derived by Pneuman (1968) for helmet streamers in the solar corona is applied using a semi-empirical technique, to find that long-lived closed loops exist only below a certain boundary in the HR diagram. The region below this boundary is occupied by stars which are known to have hot coronae and slow mass loss. It is suggested that rapid mass loss sets in when closed field loops can no longer exist in steady state in the atmosphere.

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