Galaxy Evolution

Chris Brook

We appy a full 3D+kinematic decomposition to identify the bulge, disk and halo components of a sample of disk galaxies formed in hydrodynamical cosmological simulations. The simulations use a realistic description of the effect of SN feedback and employ the zoom-in technique that allows sub-kpc resolution while at the same time preserving the dynamical torques from large scale structure. We produce artificial surface brightness maps of our galaxies based on the spatially resolved local star formation history and metallicity distributions, and a detailed treatment of dust reprocessing based on the 3D gas and metal distribution. This allowed us to directly compare decompositions based light profiles with those based on kinematics, and test the assumptions that are usually made when analyzing observational data.