The nature of the optical continuum of red-dwarf flares

Details The nature of the optical continuum of red-dwarf flares The nature of the optical continuum of red-dwarf flares

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pazh....6..498k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 6, Aug. 1980, p. 498-504.) Soviet Astronomy Letters, vol. 6, July-Aug. 1980, p. 275-278

Astronomy and Astrophysics

Astronomy

Atmospheric Heating, Chromosphere, Dwarf Stars, Flare Stars, Hydrogen Plasma, Optical Thickness, Balmer Series, Gas Ionization, High Energy Electrons, Radiative Heat Transfer, Stellar Luminosity

Scientific paper

The gas-dynamical processes that would result from heating of a partially ionized, hydrogen stellar chromosphere by accelerated electrons are investigated numerically. The radiative energy loss in the optically thick layer is estimated. A condensation should, according to the calculation, be propagated downward in the chromosphere: it would have a density n = 10 to the 15th - 10 to the 16th per cu cm, temperature T = 900 K, thickness 1-10 km, and optical depth tau (4500) = 1. The luminosity, color indices, and Balmer jump for the optical continuum of this condensation are consistent with observations of flares in red dwarf stars.

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