High-resolution rotation curves of low surface brightness galaxies

de Blok, W.J.G.; Bosma, A.

doi:10.1051/0004-6361:20020080

High-resolution rotation curves of low surface brightness galaxies

Jan, 2002

Published in:

Astron.Astrophys. 385 (2002) 816

e-Print:

astro-ph/0201276 [astro-ph]

DOI:

10.1051/0004-6361:20020080

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Abstract: (arXiv)

We present high-resolution rotation curves of a sample of 26 low surface brightness galaxies. From these curves we derive mass distributions using a variety of assumptions for the stellar mass-to-light ratio. We show that the predictions of current Cold Dark Matter models for the density profiles of dark matter halos are inconsistent with the observed curves. The latter indicate a core-dominated structure, rather than the theoretically preferred cuspy structure.

GALAXIES STRUCTURE
GALAXIES KINEMATICS
GALAXIES DYNAMICS
GALAXIES HALOS

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