The velocity dispersion of giant molecular clouds. II - Mathematical and numerical refinements


Autoria(s): Gammie, Charles F; Ostriker, Jeremiah P; Jog, Chanda J
Data(s)

1991

Resumo

The energy input to giant molecular clouds is recalculated, using the proper linearized equations of motion, including the Coriolis force and allowing for changes in the guiding center. Perturbation theory yields a result in the limit of distant encounters and small initial epicyclic amplitudes. Direct integration of the motion equations allows the strong encounter regime to be studied. The present perturbation theory result differs by a factor of order unity from that of Jog and Ostriker (1988). The result of present numerical integrations for the 2D (planar) velocity dispersion is presented. The accretion rate for a molecular cloud in the Galactic disk is calculated.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/34282/1/velocity.pdf

Gammie, Charles F and Ostriker, Jeremiah P and Jog, Chanda J (1991) The velocity dispersion of giant molecular clouds. II - Mathematical and numerical refinements. In: Astrophysical Journal, 378 (2). pp. 565-575.

Publicador

University of Chicago Press

Relação

http://articles.adsabs.harvard.edu/full/1991ApJ...378..565G

http://eprints.iisc.ernet.in/34282/

Palavras-Chave #Physics
Tipo

Journal Article

PeerReviewed