Dark matter in the inner parts of barred galaxies

Details Dark matter in the inner parts of barred galaxies Dark matter in the inner parts of barred galaxies

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004bdmh.confe..47p&link_type=abstract

"Proceedings of "Baryons in Dark Matter Halos". Novigrad, Croatia, 5-9 Oct 2004. Editors: R. Dettmar, U. Klein, P. Salucci. Publ

Computer Science

Scientific paper

The streaming motions and the associated gas shocks in the bar region are determined by the potential in the inner parts of galaxies. This signatures of non-circular motions can break the disk-halo degeneracy and be used to obtain the contribution of the dark halo to the potential. In this paper we give a short review on the current understanding of the dark matter content in the inner parts of barred galaxies using dynamical modelling. We give an overview of the main differences among the models and the main results presented by each of the groups. The main result, common to all the modelling carried out up to now, is the fact that the gravitational field in the inner region is mostly provided by the stellar luminous component. The bar pattern speeds found by the different groups are consistent with fast rotators, and the best fit M/L ratios obtained are compatible with M/L ratios derived from current population synthesis models.

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