IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Gas accretion and radial flows onto Milky Way-­type galaxies: Chemical Evolution Models in the light of cosmological simulations
Autor/es:
SEBASTIÁN E. NUZA
Lugar:
Buenos Aires
Reunión:
Conferencia; Dark Side of the Universe 2019 (Charla); 2019
Institución organizadora:
MinCyT, CONICET, UBA, ICTP
Resumen:
Chemical evolution models (CEMs) of the Galaxy usually assume that the Milky Way and other spirals form from the inside-out, implying that gas inflows onto the disk decrease with galactocentric distance and were stronger in the past. Whereas classic CEMs do not explicitely model neither gas inward fluxes nor stellar migration across the disk, others assume simple phenomenological recipes to estimate their effect. In this talk, I will focus on such assumptions from the point of view of galaxy formation simulations in the context of the standard cosmological model. In particular, we investigate gas accretion patterns, as a function of time and radius, using a suite of Milky Way-like galaxy simulations. We also study the effects of gas accretion on the generation of radial flows within the gaseous disk, and how these results may impact the predictions of CEMs.