Statistics – Computation
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...380..476a&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 380, Oct. 20, 1991, p. 476-483. Research supported by NSERC and SNSF.
Statistics
Computation
17
Computational Astrophysics, Molecular Clouds, Nebulae, Polytropic Processes, Star Formation, Stellar Mass, Density Distribution, Interstellar Magnetic Fields, Interstellar Matter
Scientific paper
A numerical study of the fragmentation of elongated polytropic axially symmetric clouds is presented. Results are obtained for various ratios of length to diameter L/D, polytropic constant gamma, and initial Jeans number J0. Initial density perturbations on the axis of otherwise uniformly dense cylinders are introduced, and the maximum number of fragments Nf(max) that can form and grow for combinations of L/D, gamma, and J0 is derived. At fixed values of L/D and J0, Nf(max) decreases when gamma increases. Since the saturation value Nmax is independent of gamma, reaching saturation at high gamma requires a larger initial Jeans number. The number of fragments formed can exceed 2L/D for gamma less than 1. The implications of these results for the minimum stellar mass are discussed.
Arcoragi Jean-Pierre
Bastien Pierre
Benz Willy
Bonnell Ian
Martel Hugo
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