Triggered formation and collapse of molecular cloud cores

Whitworth, Anthony Peter ORCID: https://orcid.org/0000-0002-1178-5486 2007. Triggered formation and collapse of molecular cloud cores. Presented at: Symposium S237 at Proceedings of the International Astronomical Union, Prague, Czech Republic, 14-18 August 2006. Proceedings of the International Astronomical Union. Proceedings of the International Astronomical Union. , vol.2 (S237) Cambridge University Press, pp. 251-257. 10.1017/S1743921307001561

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Abstract

First I discuss the dynamics of core formation in two scenarios relevant to triggered star formation, namely the fragmentation of shock-compressed layers created by colliding turbulent flows and the fragmentation of shells swept up by expanding nebulae. Second I discuss the influence of thermodynamics on the core mass spectrum, on determining which cores are ‘pre-stellar’ (i.e. destined to spawn stars) and on the minimum mass for a pre-stellar core. Third, I discuss the properties of pre-existing cores whose collapse has been triggered by an increase in external pressure, and compare the results with observations of collapsing pre-stellar cores and evaporating gaseous globules (EGGs)

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	Stars: formation; ISM: clouds; ISM: bubbles; instabilities; turbulence
Publisher:	Cambridge University Press
ISSN:	17439213
Last Modified:	27 Oct 2022 09:38
URI:	https://orca.cardiff.ac.uk/id/eprint/66853

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