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Fragmentation of Molecular Clouds: The Initial Phase of a Stellar Cluster
Open accessAbstract
The isothermal gravitational collapse and fragmentation of a region within a molecular cloud and the subsequent formation of a protostellar cluster are investigated numerically. The clump mass spectrum that forms during the fragmentation phase can be well approximated by a power-law distribution dN / dM ∝ M −1.5 . In contrast, the mass spectrum of protostellar cores that form in the centers of Jeans-unstable clumps and that evolve through accretion and N -body interactions is described by a lognormal distribution with a width that is in excellent agreement with observations of multiple stellar systems.
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Citations
Cited by
Star Formation in the Milky Way and Nearby Galaxies
Kennicutt, R. C., & Evans, N. J. (2012) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081811-125610 · Cited by 2,902
“Simulations of unstable large clumps in fact tend to fragment so strongly as the mean density increases that they overproduce brown dwarfs, but no massive stars (e.g., Klessen et al. 1998; Martel et al. 2006).”
BackgroundControl of star formation by supersonic turbulence
Mac Low, M.-M., & Klessen, R. S. (2004) · Reviews of Modern Physics · doi:10.1103/revmodphys.76.125 · Cited by 1,761
Self-citationThe formation of a bound star cluster: from the Orion nebula cluster to the Pleiades
Kroupa, P., Aarseth, S., & Hurley, J. (2001) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.2001.04050.x · Cited by 458
Bate, M. R. (2009) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2008.14106.x · Cited by 440
Self-citationGravitational Collapse in Turbulent Molecular Clouds. I. Gasdynamical Turbulence
Klessen, R. S., Heitsch, F., & Mac Low, M. (2000) · The Astrophysical Journal · doi:10.1086/308891 · Cited by 419
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Metadata
- Authors
- Klessen, R. S., Burkert, A., & Bate, M. R.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1998-07-10
- Volume
- 501
- Issue
- 2
- Pages
- L205-L208
- ISSN
- 0004-637X (ISSN-L)
- OpenAlex
- W2004460878
- Cited by
- 160
- References
- 0
- FWCI
- 9.61
- Type
- journal article
- Language
- en
- Open access
- bronze
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
