Oral Presentation

The effects of physical dust evolution model on the properties of bright submillimeter galaxies

Author(s): Ryu Makiya (ASIAA)

Presenter: Ryu Makiya (ASIAA)

It has been known that the galaxy formation simulations tend to underpredict the amount of bright submillimeter galaxies (SMGs).
Recently, Lagos et al. (2019) showed that their semi-analytic simulation can reproduce the UV-to far IR emission of galaxies, including the SMGs, in a self consistent way.
The key was to adopt the attenuation curves scales with the dust surface density, which is motivated by the radiative transfer simulations.
However, in their model the dust mass is not directly calculated but estimated from the scaling relations between gas mass, metallicity and dust mass which is calibrated by observations at local universe. They also does not properly take into account the size evolution of dust species.

To explore the dust properties of SMGs, we combine the physical dust evolution model of Hirashita & Murga (2020) with the semi-analytic galaxy formation model nu2GC (Makiya et al 2016; Shirakata et al. 2019).
In this talk we will discuss the evolution of dust properties along with the cosmological galaxy formation and it's effects on the observed SMGs properties.