Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238..158n&link_type=abstract
Astrophysical Journal, Part 1, vol. 238, May 15, 1980, p. 158-174. NATO-supported research;
Astronomy and Astrophysics
Astrophysics
312
Dynamic Models, Interstellar Gas, Molecular Gases, Nebulae, Star Formation, T Tauri Stars, Abundance, Clumps, Jeans Theory, Main Sequence Stars, O Stars, Protostars, Stellar Mass, Stellar Winds, Two Phase Flow, Ultraviolet Radiation
Scientific paper
A model is proposed which can account for the longevity, energetics, and dynamical structure of dark molecular clouds. Recent observations of a high space density of T Tauri stars in some dark clouds provide the basis for the assertion that high-velocity winds from these low mass pre-main-sequence stars provide a continuous dynamic input into molecular clouds. It is postulated that as clumps are driven above the Jeans mass, both by coalescence and the enhancement of ram pressure through continuing acceleration by protostellar winds, collapse is followed by the formation of low-mass stars that generate additional protostellar winds. Finally, it is found that star formation occurs on a relatively slow time scale, comparable to the cloud lifetime
Norman Colin
Silk Joseph
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