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H alpha rotation curves of Low Surface Brightness galaxies | | W.J.G. de Blok
; A. Bosma
; | | Date: |
17 Dec 2001 | | Subject: | astro-ph | | Affiliation: | ATNF, Sydney, Australia Observatoire de Marseille, France | | Abstract: | 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. | | Source: | arXiv, astro-ph/0201276 | | Services: | Forum | Review | PDF | Favorites | |
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