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Triggering and the gravitational instability in shells and supershells

Published online by Cambridge University Press:  01 August 2006

Jan Palouš
Jan Palouš*
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, Boční II 1401, 140 41 Prague 4, Czech Republic email: palous@ig.cas.cz
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Abstract

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The gravitational instability of shells and supershells and its relevance to the triggering of the star formation in a turbulent ISM is discussed. The IMF of the self-gravitating clumps formed out of shells is computed and triggering time is compared with the shell dissolution time due to chaotic motions.

Keywords

shock wavesturbulenceISM: bubblesISM: cloudsstars: formation

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