The influence of initial velocity fields upon star formation

Details The influence of initial velocity fields upon star formation The influence of initial velocity fields upon star formation

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233..946h&link_type=abstract

Astrophysical Journal, Part 1, vol. 233, no. 3, Nov. 1, 1979, p. 946-949.

Astronomy and Astrophysics

Astrophysics

25

Astronomical Models, Gravitational Collapse, Interstellar Gas, Star Formation, Velocity Distribution, Digital Simulation, Interstellar Matter, Mathematical Models, Virial Theorem

Scientific paper

Utilizing a virial approach and assuming homologous compression, it is shown that the presence of initial velocity fields in the interstellar medium can alter Jeans's criterion in a fundamental way. Given plausible temperatures, and velocity fields conforming to idealized symmetries but of reasonable amplitudes, the formation of self-gravitating clouds of extraordinarily low mass is, in principle, possible. For cases of collapse with radial symmetry, a comparison of the virial predictions with the results of numerical modeling shows these predictions to be roughly correct.

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