Destruction of ice grains in T Tauri stars

Details Destruction of ice grains in T Tauri stars Destruction of ice grains in T Tauri stars

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271..255s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 1, 1983, p. 255-258. Research supported by the Consiglio Nazional

Astronomy and Astrophysics

Astrophysics

9

Ice Nuclei, Stellar Envelopes, Stellar Evolution, Stellar Flares, T Tauri Stars, Energetic Particles, Hydrogen Production, Infrared Spectra, Protons, Stellar Spectrophotometry

Scientific paper

The existence of pure ice grains in the first evolutive stage of a T Tau star has been proposed in recent years on the basis of IR spectrophotometric observations. In the present paper ice grains are assumed to be destroyed in later phases of T Tau evolution. It is suggested that the mechanism responsible for their destruction is the erosion by energetic particles produced by flare activity. Experimental results show that such a destruction occurs on a time scale shorter than the estimated duration of the T Tau phase and that a noticeable number of molecules (H2, O2, H2O) are restored to the gas phase.

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