Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-10-31
Astronomy and Astrophysics
Astrophysics
19 pages, uuencoded gzipped postscript. Accepted MNRAS. Contains no figures. The full version including all 18 figures is avai
Scientific paper
We investigate the response of a circumstellar accretion disc to the fly-by of a perturbing mass on a parabolic orbit. The energy and angular momentum transferred during the encounter are calculated using a reduced three-body method. In almost all close encounters the energy and angular momentum transfer is dominated by disc material becoming unbound from the system, with the contributions from close disc particle -- star encounters being significant. For more distant encounters with some prograde element to the motion the disc material loses energy and angular momentum to the perturber's orbit through a resonance feature. The magnitude of the energy transfer calculated in our simulations is greater than that of the binding energy of material exterior to periastron by a factor of two in the prograde case, and up to a factor of five in the case of the retrograde encounter. The destructive nature of the encounters indicates that a non-linear treatment is essential in all but the most distant encounters.
Clarke Catherine J.
Hall Shannon M.
Pringle James E.
No associations
LandOfFree
Energetics of star-disc encounters in the non-linear regime 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 Energetics of star-disc encounters in the non-linear regime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energetics of star-disc encounters in the non-linear regime will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-472722