Lowered Nonextensive Stellar Distribution
| dc.creator | Silva, J. M. | |
| dc.creator | de Souza, R. E. | |
| dc.creator | Lima, J. A. S. | |
| dc.date | 2009-03-03 | |
| dc.date.accessioned | 2026-07-07T12:48:34Z | |
| dc.date.available | 2026-07-07T12:48:34Z | |
| dc.description | The structure of globular clusters and elliptical galaxies are described in an unified way through a new class of lowered models inspired on the nonextensive kinetic theory. These power law models are specified by a single parameter q which quantifies to what extent they depart from the class of lowered stellar distributions discussed by Michie and King. For q equal to unity, the Michie-King profiles are recovered. However, for q smaller than unity there is a gradual modification in the shape of the density profiles which depends on the degree of tidal damage imposed on the model, thereby also providing a good fit for globular clusters. It is also shown that a subclass of these models, those with a deeper potential and $q$ slightly less than unity, present a distribution resembling the de Vaucoulers $r^{1/4}$ profile which yields a good description of the structure of elliptical galaxies. This subset of models follows this trend, with a slight departure over nearly 10 orders of magnitudes. | |
| dc.description | 20 pages, 5 figures, 1 table | |
| dc.identifier | https://arxiv.org/abs/0903.0423 | |
| dc.identifier | http://arxiv.org/abs/0903.0423 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/222100 | |
| dc.subject | Astrophysics of Galaxies | |
| dc.title | Lowered Nonextensive Stellar Distribution | |
| dc.type | text |