Equilibrium and stability of interstellar medium in its own gravitational field

Details Equilibrium and stability of interstellar medium in its own gravitational field Equilibrium and stability of interstellar medium in its own gravitational field

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap.....50..372b&link_type=abstract

Astrophysics, Volume 50, Issue 3, pp.372-380

Astronomy and Astrophysics

Astrophysics

Interstellar Medium, Gravitating And Electrostatic Fields&Mdash, Galaxies, Self-Gravitating Layer

Scientific paper

The statistical equilibrium of a heterogeneous self-gravitating layer of the interstellar medium is examined. Electrostatic fields and the different reactions to them by electrons and the ions of different elements are taken into account. In general, different, uncoupled temperatures are specified for the individual components of the interstellar medium. It is emphasized that some details of the structure of an equilibrium layer cannot be interpreted in terms of gravitation alone, despite the weakness of the electrostatic fields. A mixture of H II, He II, and electrons is examined as an important example. The asymptotic behavior of the total density and of the ratio of partial densities over large distances is found. A method for finding (in quadrature) these characteristics at any point of the medium is described.

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