Chemodynamical simulations of evolution of galaxies : implementing dust model

• Main Author: Gaudin, Nicolas
• Language: English
• Published: Université de Strasbourg 2013
• Subjects: [SDU:OTHER] Sciences of the Universe/Other; [SDU:OTHER] Planète et Univers/Autre; Astrophysics; Numerical simulations; Galaxies; Dust
• Online Access: http://tel.archives-ouvertes.fr/tel-01059565; http://tel.archives-ouvertes.fr/docs/01/05/95/65/PDF/Gaudin_Nicolas_2013_ED413.pdf

Numerical simulations are a useful tool to understand galaxies. In addition to gravitation, other processes can be included for chemodynamical simulations: star formation, feedback of newly formed and evolving stars, metal enrichment, cooling of the interstellar medium, etc. These simulations describe in a self-consistent way the hydrodynamical and chemical evolution of galaxies. I use chemodynamical simulations to build up a model of evolution of the dust mass, solid component of the interstellar medium, in our Galaxy and in dwarf galaxies. I have performed simulations of a massive galaxy to understand localeffects on dust evolution while simulations of dwarf galaxies have been carried out to follow the dust mass in low metallicity environments. Chemodynamical simulations have shown that they are useful. Indeed, local effects and transport mechanisms are naturally included and turn out to be important for a model of dust mass production and destruction.