Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:0706.1357)
· References in the article
· Citations to the Article (9) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (1)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Self-Consistent Massive Disks in Triaxial Dark Matter Halos
Authors:
Bailin, Jeremy; Simon, Joshua D.; Bolatto, Alberto D.; Gibson, Brad K.; Power, Chris
Affiliation:
AA(Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H39, P.O. Box 218, Hawthorn, Victoria, 3122, Australia.; Current address: Department of Physics and Astronomy, ABB-241, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada.), AB(Department of Astronomy, California Institute of Technology, 1200 East California Boulevard, MS 105-24, Pasadena, CA 91125.), AC(Department of Astronomy and Radio Astronomy Laboratory, University of California, Berkeley, CA 94720.), AD(Centre for Astrophysics, University of Central Lancashire, Preston, PR1 2HE, UK.), AE(Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H39, P.O. Box 218, Hawthorn, Victoria, 3122, Australia.)
Publication:
The Astrophysical Journal, Volume 667, Issue 1, pp. 191-201. (ApJ Homepage)
Publication Date:
09/2007
Origin:
UCP
ApJ Keywords:
Cosmology: Dark Matter, Galaxies: Halos, Galaxies: Kinematics and Dynamics, Galaxies: Spiral, Galaxies: Structure, Methods: Numerical
DOI:
10.1086/520843
Bibliographic Code:
2007ApJ...667..191B

Abstract

Galactic disks in triaxial dark matter halos become deformed by the elliptical potential in the plane of the disk in such a way as to counteract the halo ellipticity. We develop a technique to calculate the equilibrium configuration of such a disk in the combined disk-halo potential, which is based on the method of Jog but accounts for the radial variation in both the halo potential and the disk ellipticity. This crucial ingredient results in qualitatively different behavior of the disk: the disk circularizes the potential at small radii, even for a reasonably low disk mass. This effect has important implications for proposals to reconcile cuspy halo density profiles with low surface brightness galaxy rotation curves using halo triaxiality. The disk ellipticities in our models are consistent with observational estimates based on two-dimensional velocity fields and isophotal axis ratios.
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