Parmentier, G., Goodwin, S.P., Kroupa, P. et al. (1 more author) (2008) The shape of the initial cluster mass function: What it tells us about the local star formation efficiency. Astrophysical Journal, 678. pp. 347-352. ISSN 0004-637X
Abstract
We explore how the expulsion of gas from star cluster forming cloud cores due to supernova explosions affects the shape of the initial cluster mass function, that is, the mass function of star clusters when effects of gas expulsion are over. We demonstrate that if the radii of cluster-forming gas cores are roughly constant over the core mass range, as supported by observations, then more massive cores undergo slower gas expulsion. Therefore, for a given star formation effi- ciency, more massive cores retain a larger fraction of stars after gas expulsion. The initial cluster mass function may thus differ from the core mass function substantially, with the final shape depending on the star formation efficiency. A massindependent star formation efficiency of �20% turns a power-law core mass function into a bell-shaped initial cluster mass function, while mass-independent efficiencies of order 40% preserve the shape of the core mass function.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2008 American Astronomical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | galaxies : star clusters; stars : formation; stellar dynamics |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 16 Feb 2018 12:58 |
Last Modified: | 16 Feb 2018 12:58 |
Published Version: | https://doi.org/10.1086/587137 |
Status: | Published |
Publisher: | American Astronomical Society |
Refereed: | Yes |
Identification Number: | 10.1086/587137 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:127504 |