Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...133..369r&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 133, no. 2, April 1984, p. 369-373.
Astronomy and Astrophysics
Astrophysics
3
Compressed Gas, Dynamic Stability, Halos, Maclaurin Series, Rotating Fluids, Stellar Atmospheres, Cosmic Gases, Eigenvalues, Kelvin-Helmholtz Instability, Milky Way Galaxy, Stellar Oscillations, Stellar Rotation, Stellar Structure, Vibration Mode
Scientific paper
The equilibrium and the stability of homogeneous gaseous and uniformly rotating Maclaurin spheroids imbedded in a rigid homogeneous and spherical stellar halo are considered. A new analytical method has been devised that allows a simultaneous determination of the eigenvalues and the corresponding displacement vectors. Explicitly, the modes of oscillations stemming from the fundamental radial mode of the homogeneous compressible sphere and its nonradial 'f' (or Kelvin) modes belonging to the second and third spherical harmonics together with the first 'pressure' and 'gravity' modes p1 and g1 belonging to the first spherical harmonics were obtained. It has been assumed that the oscillations are adiabatic and several sequences of spheroids corresponding to various values of the halo mass have been examined. The Kelvin modes behave very much as in the incompressible case. But the study of the gravity modes leads to a quite surprising result: a stellar halo does not always exert a stabilizing effect on dynamical instability.
Leruth L.
Robe H.
No associations
LandOfFree
The stabilizing and destabilizing effects of haloes 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 The stabilizing and destabilizing effects of haloes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The stabilizing and destabilizing effects of haloes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1498173