The dark matter content of early-type barred galaxies
| dc.creator | Corsini, E. M. | |
| dc.date | 2005-04-09 | |
| dc.date.accessioned | 2026-07-07T02:17:25Z | |
| dc.date.available | 2026-07-07T02:17:25Z | |
| dc.description | The dynamics of a barred galaxy depends on the pattern speed of its bar. The only direct method for measuring the pattern speed of a bar is the Tremaine-Weinberg technique. This method relies on the analysis of the distribution and dynamics of the stellar component. It is best suited to gas-poor galaxies and therefore it has been restricted to early-type barred galaxies. On the other hand, a variety of indirect methods, which are based on the analysis of the distribution and dynamics of the gaseous component, has been used to measure the bar pattern speed in late-type barred galaxies. The complete sample of galaxies for which the bar pattern speed has been directly measured with the Tremaine-Weinberg method is given. Nearly all the measured bars are as rapidly rotating as they can be. By comparing this result with recent high-resolution N-body simulations of bars in cosmologically-motivated dark matter halos, it is possible to conclude that these bars are not located inside centrally-concentrated halos. | |
| dc.description | 5 pages. Proceedings of "Baryons in Dark Matter Halos". Novigrad, Croatia, 5-9 Oct 2004. Editors: R. Dettmar, U. Klein, P. Salucci. Published by SISSA | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0504224 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0504224 | |
| dc.identifier | 2005, Proceedings of Science, BDMH2004, p.49.1 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9166 | |
| dc.subject | Astrophysics | |
| dc.title | The dark matter content of early-type barred galaxies | |
| dc.type | text |