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)
· arXiv e-print (arXiv:astro-ph/9704274)
· References in the article
· Citations to the Article (204) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (47)
· NED Objects (47)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The dark and visible matter content of low surface brightness disc galaxies
Authors:
de Blok, W. J. G.; McGaugh, S. S.
Affiliation:
AA(Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, the Netherlands), AB(Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road NW, Washington, DC 20015, USA)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 290, Issue 3, pp. 533-552. (MNRAS Homepage)
Publication Date:
09/1997
Origin:
MNRAS
MNRAS Keywords:
GALAXIES: FUNDAMENTAL PARAMETERS, GALAXIES: HALOES, GALAXIES: KINEMATICS AND DYNAMICS, GALAXIES: SPIRAL, DARK MATTER
Bibliographic Code:
1997MNRAS.290..533D

Abstract

We present mass models of a sample of 19 low surface brightness (LSB) galaxies and compare the properties of their constituent mass components with those of a sample of high surface brightness (HSB) galaxies. We find that LSB galaxies are dark matter dominated. Their halo parameters are only slightly affected by assumptions on stellar mass-to-light ratios. Comparing LSB and HSB galaxies we find that mass models derived using the maximum disc hypothesis result in the discs of LSB galaxies having systematically higher stellar mass-to-light ratios than HSB galaxies of similar rotation velocity. This is inconsistent with all other available evidence on the evolution of LSB galaxies. We argue therefore that the maximum disc hypothesis does not provide a representative description of the LSB galaxies and their evolution. Mass models with stellar mass-to-light ratios determined by the colours and stellar velocity dispersions of galactic discs imply that LSB galaxies have dark matter haloes that are more extended and less dense than those of HSB galaxies. Surface brightness is thus related to the halo properties. LSB galaxies are slowly evolving, low-density and dark matter dominated galaxies.

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