High-resolution rotation curves of low surface brightness galaxies
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. based on observations at the Observatoire de Haute Provence.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- April 2002
- DOI:
- 10.1051/0004-6361:20020080
- arXiv:
- arXiv:astro-ph/0201276
- Bibcode:
- 2002A&A...385..816D
- Keywords:
-
- GALAXIES: STRUCTURE;
- GALAXIES: KINEMATICS AND DYNAMICS;
- GALAXIES: HALOS;
- Astrophysics
- E-Print:
- Accepted for A&