Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (13) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
Orbital contributions to the stability of triaxial galaxies
Authors:
de Zeeuw, Tim; Schwarzschild, Martin
Affiliation:
AA(Institute for Advanced Study, Princeton, NJ), AB(Princeton University Observatory, NJ)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 345, Oct. 1, 1989, p. 84-100. (ApJ Homepage)
Publication Date:
10/1989
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
COMPUTATIONAL ASTROPHYSICS, GALACTIC STRUCTURE, STELLAR ORBITS, ASTRONOMICAL MODELS, DENSITY DISTRIBUTION, ELLIPSOIDS, MANY BODY PROBLEM, PERTURBATION THEORY
DOI:
10.1086/167883
Bibliographic Code:
1989ApJ...345...84D

Abstract

Goodman's indicator is used here to investigate the stability of perfect ellipsoids, which are prototypical nonrotating triaxial galaxy models. The contributions of the individual stellar orbits to the indicator are presented for three specific adiabatic perturbations, which change the axis ratios of the ellipsoids but leave the density profile invariant. It is found that for barlike perturbations, in which one axis is elongated and another is compressed, box orbits are predominantly destabilizing, while outer long-axis tubes are invariably stabilizing. Short-axis tubes and inner long-axis tubes may be both stabilizing and destabilizing. These results are combined with Statler's (1987) results to obtain tentative estimates of Goodman's indicator for self-consistent perfect ellipsoid models.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


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