Changes between Version 23 and Version 24 of u/EricasLibrary

Timestamp:

11/12/11 19:46:55 (13 years ago)

Author:

Erica Kaminski

Comment:

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u/EricasLibrary

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 [http://adsabs.harvard.edu/abs/2004MNRAS.355..248B The formation and evolution of protostellar discs; three-dimensional adaptive mesh refinement hydrosimulations of collapsing, rotating Bonnor-Ebert spheres]
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+=== Summary ===
+3d hydro, AMR simulations of rotating Bonnor Ebert spheres with varying degrees of initial rotation. Final collapse structures depend on the degree of rotation, with the general trend being slower rotation leads to bars, faster rotation leads to rings. Radiative cooling is incorporated into the model and a more complicated EOS. 
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+=== Methods === 
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+Both high and low mass BE spheres were studied. All runs had an m=2 density perturbation. The EOS was more sophisticated than  earlier works. 
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+=== Results === 
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+No fragmentation/non-central collapse in the isothermal regime.
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+ Bars or rings form after the 'non-isothermal core' accretes surrounding gas and forms a disc.
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+Temperature shocks form after the isothermal phase; as the core begins to hit up and halt the collapse, cold material from the envelope falls in and forms a shock front of temperature discontinuity. The inner shock front sets the conditions  that control subsequent disc structure and dynamics. 
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 [[CollapsibleEnd]]