Collapse and Fragmentation Models of Cloud Cores with Magnetic Field Support

Details Collapse and Fragmentation Models of Cloud Cores with Magnetic Field Support Collapse and Fragmentation Models of Cloud Cores with Magnetic Field Support

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000rmxac...9...89k&link_type=abstract

"Astrophysical Plasmas: Codes, Models, and Observations, Proceedings of the conference held in Mexico City, October 25-29, 1999,

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In this work we present numerical models of the collapse and fragmentation of slowly rotating (η≈ 0.037), thermally supercritical (α≈ 0.36), molecular cloud cores, including the effects of magnetic support, ambipolar diffusion and a tidal interaction due to a gravitational encounter with another protostar. The magnetic forces delay the onset of dynamic collapse and hence of fragmentation by an amount that depends on the initial central mass-to-flux ratio. The results show that the models are susceptible to fragment into binary systems and in some cases into triple and quadruple systems depending on the intensity of the magnetic support and the tidal interaction.

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