On the onset of mass loss in late-type stars

Details On the onset of mass loss in late-type stars On the onset of mass loss in late-type stars

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341l..95e&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 341, June 15, 1989, p. L95-L98.

Astronomy and Astrophysics

Astrophysics

25

Late Stars, Radiation Pressure, Stellar Atmospheres, Stellar Mass, Cosmic Dust, Molecular Rotation, Photosphere, Stellar Winds, Water

Scientific paper

It is shown that the radiation pressure caused by photons trapped in the rotation-vibration transitions of the H2O molecule exceeds the gas pressure in the atmospheres of cool late-type stars with low surface gravity. This mechanism can aid in lifting the material to the dust formation point, thus solving the long-standing problem of how the wind is initiated in these sources.

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