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Star formation in molecular cores

 Goodwin, S.A., Whitworth, Anthony Peter and Ward-Thompson, Derek 2006. Star formation in molecular cores. Astronomy & Astrophysics 452 (2) , pp. 487-492. 10.1051/0004-6361:20054026

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Abstract

We investigate the effect of the turbulent power spectrum ( $P(k) \propto k^{-n}$, with $n = 3,\,4\;{\rm or}\;5$) on the fragmentation of low-mass cores, by means of SPH simulations. We adopt initial density profiles and low levels of turbulence based on observation, and for each n-value we conduct an ensemble of simulations with different initial seeds for the turbulent velocity field, so as to obtain reasonable statistics. We find that when power is concentrated at larger scales (i.e. for larger n), more protostellar objects form and there is a higher proportion of low-mass stars and brown dwarfs. This is in direct contrast with the recent results of Delgado Donate et al., presumably because they adopted much higher levels of turbulence.

Item Type: Article Publication Published Physics and Astronomy Q Science > QB Astronomy stars: formation Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0004-6361/ (accessed 16/04/2014) EDP Sciences 0004-6361 30 March 2016 04 Jun 2017 04:55 http://orca.cf.ac.uk/id/eprint/46503

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