Heating of chromospheres and coronae in cool stars

Details Heating of chromospheres and coronae in cool stars Heating of chromospheres and coronae in cool stars

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979iraj...14...73m&link_type=abstract

Irish Astronomical Journal, vol. 14, Sept.-Dec. 1979, p. 73-90.

Astronomy and Astrophysics

Astronomy

1

Atmospheric Heating, Chromosphere, Cool Stars, Magnetic Effects, Stellar Atmospheres, Stellar Coronas, Dwarf Stars, Giant Stars, Late Stars, Solar Interior, Stellar Magnetic Fields

Scientific paper

Recent evidence is summarized that suggests that neither of two traditional views of chromospheric heating (that the flux of energy required to heat the solar chromosphere) is only a small fraction of the total radiative energy emerging from the solar interior and that chromospheres are heated by acoustic waves generated in the convection zone (which lies close to the surface of the star) is valid. Particular attention is given to cool stars, both dwarfs and giants. The directions in which research is currently heading in attempting to understand heating of chromospheres and coronae in these stars are indicated. Hot stars are excluded from consideration because radiation pressure plays an important role in their atmospheric heating. It is concluded that the role of magnetic fields in giants is different from the role in dwarfs.

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