Shoubaneh Hemmati (UCR)

Internal secular evolution processes are known to be one of the main mechanisms responsible for the evolution of "global" properties of galaxies such as their star formation activity, stellar mass assembly, and morphology. In this talk, I will resolve substructures in intermediate redshift disk galaxies to kpc-scale and illustrate their relation with the global properties of the host galaxy. Using combined high resolution data from the Hubble Space Telescope and long exposure spectroscopic observations with the Keck telescope, I produce 2D maps of physical properties of galaxies such as rest-frame optical color, stellar mass and star formation rate surface density, extinction and age as well as 1D profiles of diagnostic optical line ratios including the Balmer decrement. I identify blue and red clumps inside these emission-line galaxies and demonstrate the existence of a tight star formation main-sequence relation among the substructures in galaxies. I will also present the relation between nebular and stellar dust attenuation along the major axis of galaxies. Finally, I will briefly discuss potential future science projects that can be addressed using this methodology.