Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Printable Article (PDF/Postscript)
· Scanned Article (GIF)
· arXiv e-print (arXiv:astro-ph/0308207)
· Table of Contents
· References in the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
On the stability of self-gravitating protoplanetary discs
Authors:
Rice, W. K. M.; Armitage, P. J.; Bonnell, I. A.; Bate, M. R.
Publication:
In: Proceedings of the Conference on Towards Other Earths: DARWIN/TPF and the Search for Extrasolar Terrestrial Planets, 22-25 April 2003, Heidelberg, Germany. Edited by M. Fridlund, T. Henning, compiled by H. Lacoste. ESA SP-539, Noordwijk, Netherlands: ESA Publications Division, ISBN 92-9092-849-2, 2003, p. 555 - 560
Publication Date:
10/2003
Origin:
ARI
ARI Keywords:
Protoplanetary Discs, Stability
Abstract Copyright:
ESA
Comment:
ISBN: 92-9092-849-2
Bibliographic Code:
2003ESASP.539..555R

Abstract

It has already been shown, using a local model, that accretion discs with cooling times tcool ≤ 3Ω-1 fragment into gravitationally bound objects, while those with cooling times tcool > 3Ω-1 evolve into a quasi-steady state. We present results of three-dimensional simulations that test if the local result still holds globally. We find that the fragmentation boundary is close to that determined using the local model, but that fragmentation may occur for longer cooling times when the disc is more massive or when the mass is distributed in such a way as to make a particular region of the disc more susceptible to the growth of the gravitational instability. These results have significant implications for the formation of gaseous planets in protoplanetary discs and also for the redistribution of angular momentum which could be driven by the presence of relatively massive, bound objects within the disc.

Printing Options

Send high resolution image to Level 2 Postscript Printer
Send low resolution image to Level 2 Postscript Printer
Send low resolution image to Level 1 Postscript Printer
Get high resolution PDF image
Get low resolution PDF
Send 300 dpi image to PCL Printer
Send 150 dpi image to PCL Printer

More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints