Envelopes of cool giant stars - A hybrid model

Details Envelopes of cool giant stars - A hybrid model Envelopes of cool giant stars - A hybrid model

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981rbrfi..11..869m&link_type=abstract

Revista Brasileira de Fisica, vol. 11, Dec. 1981, p. 869-876. Research supported by the Conselho Nacional de Pesquisas.

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1

Red Giant Stars, Stellar Envelopes, Stellar Models, Atmospheric Temperature, Chromosphere, Hertzsprung-Russell Diagram, Iue, Late Stars, Molecular Interactions, Radiation Pressure, Stellar Envelopes, Stellar Mass Ejection, Stellar Structure, Stellar Temperature, Ultraviolet Spectra

Scientific paper

A hybrid mechanism is proposed for consideration of mass loss from cool giant stars which involves chromosphere evaporation and radiation pressure on molecules. Emphasis is given to the differences between purely radiative winds and the present model, and average chromospheric temperatures are estimated which are compatible with the previously determined mass loss rate. The model geometry assumes a hybrid envelope consisting of a warm chromosphere above the stellar photosphere, surrounded by a cool layer which contains atomic gas and molecules. It is further assumed that the chromosphere is optically thin and isothermal.

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