Two Dimensional Velocity Fields of Low Surface Brightness Galaxies
Astrophysics
2009-11-13 v1
Abstract
We present high resolution two dimensional velocity fields from integral field spectroscopy along with derived rotation curves for nine low surface brightness galaxies. This is a positive step forward in terms of both data quality and number of objects studied. We fit NFW and pseudo-isothermal halo models to the observations. We find that the pseudo-isothermal halo better represents the data in most cases than the NFW halo, as the resulting concentrations are lower than would be expected for LCDM.
Cite
@article{arxiv.astro-ph/0509683,
title = {Two Dimensional Velocity Fields of Low Surface Brightness Galaxies},
author = {Rachel Kuzio de Naray and Stacy S. McGaugh and W. J. G. de Blok and Albert Bosma},
journal= {arXiv preprint arXiv:astro-ph/0509683},
year = {2009}
}
Comments
2 pages, 1 figure, to appear in the XXIst IAP Colloquium "Mass Profiles and Shapes of Cosmological Structures", Paris 4-9 July 2005, (Eds.) G. Mamon, F. Combes, C. Deffayet, B. Fort, (EDP Sciences)