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The spatial distribution of star formation in the solar neighbourhood: do all stars form in dense clusters?
Open accessAbstract
We present a global study of low-mass, young stellar object (YSO) surface densities (Σ) in nearby (<500 pc) star-forming regions based on a comprehensive collection of Spitzer Space Telescope surveys. We show that the distribution of YSO surface densities in the solar neighbourhood is a smooth distribution, being adequately described by a lognormal function from a few to 103 YSOs pc−2, with a peak at ∼22 stars pc−2 and a dispersion of . We do not find evidence for multiple discrete modes of star formation (e.g. clustered and distributed). Comparing the observed surface density distribution to previously reported surface density threshold definitions of clusters, we find that the fraction of stars in clusters is crucially dependent on the adopted definitions, ranging from 40 to 90 per cent. However, we find that only a low fraction (<26 per cent) of stars are formed in dense environments where their formation/evolution (along with their circumstellar discs and/or planets) may be affected by the close proximity of their low-mass neighbours.
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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
Self-citationKruijssen, J. M. D. (2012) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2012.21923.x · Cited by 424
Krumholz, M. R. (2014) · Physics Reports · doi:10.1016/j.physrep.2014.02.001 · Cited by 321
YOUNG STELLAR OBJECTS IN THE GOULD BELT
Dunham, M. M., Allen, L. E., Evans II, N. J., Broekhoven-Fiene, H., Cieza, L. A., Di Francesco, J., Gutermuth, R. A., Harvey, P. M., Hatchell, J., Heiderman, A., et al. (2015) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/220/1/11 · Cited by 303
Self-citationThe kinematics of the Scorpius-Centaurus OB association from Gaia DR1
Wright, N. J., & Mamajek, E. E. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty207 · Cited by 144
Metadata
- Authors
- Bressert, E., Bastian, N., Gutermuth, R., Megeath, S. T., Allen, L., Evans, N. J., Rebull, L. M., Hatchell, J., Johnstone, D., Bourke, T. L., Cieza, L. A., Harvey, P. M., Merin, B., Ray, T. P., & Tothill, N. F. H.
- Venue
- Monthly Notices of the Royal Astronomical Society: Letters
- Publisher
- Oxford University Press (OUP)
- Published
- 2010-11-01
- Volume
- 409
- Issue
- 1
- Pages
- L54-L58
- ISSN
- 1745-3925 (ISSN-L)
- 1745-3933
- OpenAlex
- W2145822028
- Cited by
- 345
- References
- 0
- FWCI
- 18.78
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Bressert, E., Bastian, N., Gutermuth, R., Megeath, S. T., Allen, L., Evans, N. J., Rebull, L. M., Hatchell, J., Johnstone, D., Bourke, T. L., Cieza, L. A., Harvey, P. M., Merin, B., Ray, T. P., & Tothill, N. F. H. (2010). The spatial distribution of star formation in the solar neighbourhood: do all stars form in dense clusters? Monthly Notices of the Royal Astronomical Society: Letters. https://doi.org/10.1111/j.1745-3933.2010.00946.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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