Two Dimensional Velocity Fields of Low Surface Brightness Galaxies

Details Two Dimensional Velocity Fields of Low Surface Brightness Galaxies Two Dimensional Velocity Fields of Low Surface Brightness Galaxies

2005-09-22

arxiv.org/abs/astro-ph/0509683v1

AIP Conf.Proc.848:490-491,2006

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure, to appear in the XXIst IAP Colloquium "Mass Profiles and Shapes of Cosmological Structures", Paris 4-9 July

Scientific paper

10.1063/1.2348022

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.

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