Sep 9 – 13, 2019
Rome
UTC timezone

Formation and chemical evolution of dusty galaxies at z >= 4 (Luca Graziani)

Sep 12, 2019, 11:18 AM
18m
Rome

Rome

Accademia dei Lincei c/o Villa Farnesina Via della Lungara 10/230 00165 Roma

Description

In this talk I will first review recent models of galaxy formation
featuring the creation and evolution of dust in the ISM of galaxies
recently observed in the early universe ( z >4). Processes of dust
formation from stellar sources (see Marassi et al., 2019) will be
discussed, with a particular emphasis on the modeling of dust stellar
yields and the efficiency of the reverse shock process in destroying the
dust created by supernovae (Ginolfi et al., 2018). The evolution of dust
grains present in the various phases of the ISM, as well as their impact
on the colors of these galaxies, will be then discussed in light of
recent results of our semi-analytic models (Mancini et al,. 2015,16).
Finally, a new set of hydrodynamical simulations performed with the
recently developed SPH code dustyGadget will be introduced and their
predictions compared with an extended set of dust estimates in high
redshift, normal star forming galaxies. Future radiative transfer
simulations including dust (see Glatzle et al., 2019) will allow to
investigate how the the hot and cold ISM phases evolve in the first
galaxies, under the effects of consistent radiative and chemical feedback.

Presentation materials