| Full text | |
| Author(s): |
Caproni, Anderson
;
Lanfranchi, Gustavo A.
;
Campos Baiao, Gabriel H.
;
Kowal, Grzegorz
;
Falceta-Goncalves, Diego
;
McQuinn, KBW
;
Stierwalt, S
Total Authors: 7
|
| Document type: | Journal article |
| Source: | DWARF GALAXIES: FROM THE DEEP UNIVERSE TO THE PRESENT; v. 14, n. S344, p. 4-pg., 2019-01-01. |
| Abstract | |
Dwarf spheroidal galaxies of the Local Group share a similar characteristic nowadays: a low amount of gas in their interiors. In this work, we present results from a three-dimensional hydrodynamical simulation of the gas inside an object with similar characteristics of the Ursa Minor galaxy. We evolved the initial gas distribution over 3 Gyr, considering the effects of the types Ia and II supernovae. The instantaneous supernovae rates were derived from a chemical evolution model applied to spectroscopic data of the Ursa Minor galaxy. Our simulation shows that the amount of gas that is lost varies with time and galactocentric radius. The highest gas-loss rates occurred during the first 600 Myr of evolution. Our results also indicate that types Ia and II supernovae must be essential drivers of the gas loss in Ursa Minor galaxy (and probably in other similar dwarf galaxies). (AU) | |
| FAPESP's process: | 14/11156-4 - What drives the stellar mass growth of Early-Type galaxies? Born or made: the saga continues |
| Grantee: | Reinaldo Ramos de Carvalho |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/25651-5 - Numerical studies of extragalactic objects in the local universe and at high redshifts |
| Grantee: | Anderson Caproni |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/03173-4 - Gas removal in the Ursa Minor galaxy: linking hydrodynamics and chemical evolution models |
| Grantee: | Anderson Caproni |
| Support Opportunities: | Regular Research Grants - Publications - Scientific article |
| FAPESP's process: | 09/54006-4 - A computer cluster for the Astronomy Department of the University of São Paulo Institute of Astronomy, Geophysics and Atmospheric Sciences and for the Cruzeiro do Sul University Astrophysics Center |
| Grantee: | Elisabete Maria de Gouveia Dal Pino |
| Support Opportunities: | Multi-user Equipment Program |