Other
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.240..941r&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 240, Oct. 15, 1989, p. 941-956.
Other
16
Circular Orbits, Galactic Structure, Interacting Galaxies, Lagrangian Equilibrium Points, Angular Momentum, Astronomical Models, Line Of Sight, Stellar Systems
Scientific paper
This paper presents theoretical models for a particular class of close binary galaxies, the 'dumb-bell galaxies'. In these models two components of equal size orbit each other on bound, circular orbits within a common envelope of adjustable extent. A series of self-consistent equilibria is constructed for such dumb-bell systems. These equilibria are based on distribution functions that depend on the Jacobian energy E(j) only, and as a result they all rotate as solid bodies. N-body experiments indicate that the presence of a common envelope per se does not cause violent dynamical instabilities, and that therefore binary systems with a common envelope of limited extent do not necessarily coalesce within a few orbital periods. However, mass and angular momentum loss through the Lagrangian point L3 can lead to a rapid merging of the two subsystems. An application of these results to binary stars suggests that the initial merging of a double white dwarf will not produce a massive enough remnant to ignite a supernova. A preliminary investigation of the orbital structure within the present dumb-bell potential reveals the presence of two additional integrals of motion for particles that remain within one half of the dumb-bell.
Rix Hans-Walter R.
White Simon D. M.
No associations
LandOfFree
The dynamics of dumb-bell galaxies 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 dynamics of dumb-bell galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dynamics of dumb-bell galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1531521