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Two Dimensional Velocity Fieldsof Low Surface Brightness Galaxies

Published online by Cambridge University Press:  19 May 2006

G.A. Mamon ,
F. Combes ,
C. Deffayet ,
B. Fort ,
R. Kuzio de Naray ,
S.S. McGaugh ,
W.J.G. de Blok  and
A. Bosma
R. Kuzio de Naray
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
S.S. McGaugh
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
W.J.G. de Blok
Affiliation:
RSAA Mount Stromlo Observatory, Cotter Road, Weston Creek ACT 2611, Australia
A. Bosma
Affiliation:
Observatoire de Marseille, 2 place Le Verrier, 13248 Marseille Cedex 4, France
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Abstract

We present high resolution two dimensional velocity fieldsfrom 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 ΛCDM.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 20: Mass Profiles and Shapes of Cosmological Structures , 2006 , pp. 285 - 286
Copyright
© EAS, EDP Sciences, 2006

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