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Stellar feedback and triggered star formation

Palous, Jan, Wünsch, Richard, Dale, James E., Sidorin, Vojtech and Whitworth, Anthony Peter 2009. Stellar feedback and triggered star formation. Proceedings of the International Astronomical Union 5 (S266) , pp. 41-45. 10.1017/S1743921309990858

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Abstract

Young, massive stars influence their ambient medium through winds and radiation. The outcome of this feedback depends on the number of massive stars in a star cluster and on the density of the ambient medium. This contribution is based on a comparison of observations to the results of numerical simulations. We discuss the gravitational fragmentation of feedback-driven shells expanding from young stellar clusters. The thin-shell approximation is compared to 3D hydrodynamical simulations with smoothed-particle hydrodynamics and adaptive-mesh refinement codes. We explore the influence of external pressure and propose a thick-shell dispersion relation, where the pressure of the external medium is included. The mass spectrum of the shell fragments is constructed and we speculate about the origin of the deficit of low-mass objects.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: stars: formation; ISM: structure; galaxies: star clusters
Additional Information: Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/1743-9213/ (accessed 21/02/2014).
Publisher: Cambridge University Press
ISSN: 1743-9213
Date of First Compliant Deposit: 30 March 2016
Last Modified: 10 Oct 2017 13:57
URI: http://orca.cf.ac.uk/id/eprint/22076

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