Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...312...66m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 312, Jan. 1, 1987, p. 66-78. Research supported by the University of Califo
Astronomy and Astrophysics
Astrophysics
7
Cosmic Gases, Galactic Bulge, Galactic Nuclei, Galactic Structure, Interstellar Matter, Molecular Clouds, Spiral Galaxies, Density Distribution, Equations Of Motion, Galactic Rotation, Gravitational Effects, Mass Distribution
Scientific paper
The authors examine the orbits and stability properties of interstellar clouds moving within the bulges of spiral galaxies. Such a study may be particularly relevant to the dynamics and stability of clouds which produce the "narrow-line" emission in active galaxies. The authors establish general conditions under which clouds can move relative to a hot cloud-confining medium without suffering gravitational, tidal, shear, or Rayleigh-Taylor instabilities. For this purpose they develop an equation of motion for clouds moving in a bulge potential and a noninertial virial equation which determines the radius and stability of the clouds at all times. Emphasis is placed on a study of interstellar clouds that propagate inward through the galactic bulge by the action of dissipative drag forces against a hot intercloud medium. It is found that many of these clouds - particularly the nonmagnetic clouds - are destroyed by gravitational collapse, tidal shear, or R-T instability before they reach a distance of ≡100 pc from the galactic nucleus.
Mathews William G.
Murray Stephen D.
No associations
LandOfFree
Gas clouds in galactic bulges 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 Gas clouds in galactic bulges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas clouds in galactic bulges will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1622155