Numerical models for the collapse and fragmentation of centrally condensed molecular cloud cores

Details Numerical models for the collapse and fragmentation of centrally condensed molecular cloud cores Numerical models for the collapse and fragmentation of centrally condensed molecular cloud cores

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...386..578m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 386, Feb. 20, 1992, p. 578-586.

Statistics

Computation

55

Fragmentation, Gravitational Collapse, Hydrodynamics, Interstellar Matter, Molecular Clouds, Star Formation, Astronomical Models, Computational Astrophysics, Numerical Analysis, Protostars

Scientific paper

The gravitational collapse and fragmentation of centrally condensed molecular cloud cores are investigated using a new hydrodynamical code. The numerical scheme is second-order accurate and uses explicit finite difference methods to advance the fluid variables on a 3D Cartesian grid. Two initial power-law density profiles, rho varies as r exp -1 and rho varies as r exp -2, are considered, as well as two initial density perturbations in the azimuthal coordinate theta, rho-i - rho(1 + a cos 2theta) where a = 0.1 and 0.5. Fragmentation is found to be possible in these centrally condensed cores if the initial conditions also include differential rotation. Models which collapse with initial uniform rotation do not produce fragments. If molecular cloud cores are indeed centrally condensed, as suggested by observations of star-forming regions and by studies of ambipolar diffusion, then differential rotation may be a mechanism for producing binary protostars during gravitational collapse.

Affiliated with

Also associated with

No associations

Rating

Numerical models for the collapse and fragmentation of centrally condensed molecular cloud cores does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Numerical models for the collapse and fragmentation of centrally condensed molecular cloud cores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Numerical models for the collapse and fragmentation of centrally condensed molecular cloud cores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1046579