Watkins, S. J., Bhattal, A. S., Boffin, H. M. J., Francis, N. and Whitworth, Anthony Peter  ORCID: https://orcid.org/0000-0002-1178-5486
1998.
Numerical simulations of protostellar encounters - II. Coplanar disc-disc encounters.
Monthly Notices- Royal Astronomical Society
300
(4)
, pp. 1205-1213.
|
Abstract
It is expected that an average protostar will undergo at least one impulsive interaction with a neighbouring protostar whilst a large fraction of its mass is still in a massive, extended disc. Such interactions must have a significant impact upon the evolution of the protostars and their discs. We have carried out a series of simulations of coplanar encounters between two stars, each possessing a massive circumstellar disc, using an SPH code that models gravitational, hydrodynamic and viscous forces. We find that during a coplanar encounter, disc material is swept up into a shock layer between the two interacting stars, and the layer then fragments to produce new protostellar condensations. The truncated remains of the discs may subsequently fragment; and the outer regions of the discs may be thrown off to form circumbinary disc-like structures around the stars. Thus coplanar disc-disc encounters lead efficiently to the formation of multiple star systems and small-N clusters, including substellar objects
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy |
| Subjects: | Q Science > QB Astronomy |
| Publisher: | Wiley-Blackwell |
| ISSN: | 0035-8711 |
| Related URLs: | |
| Last Modified: | 27 Oct 2022 10:19 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/69710 |
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