Galaxy evolution and weak lensing studies in the J-PAS survey

During the next year, the J-PAS survey will start imaging the northern sky with a unique photometric system composed of 56 narrow and 4 broad bands. The peculiar configuration and strategy of this survey pursue to provide accurate low-resolution spectra or photo-spectra (FWHM~125 \AA) allowing us to obtain high-quality photometric redshifts (\sigma_z~0.003 for LRGs) for millions of galaxies across 8000 deg^2 of the sky. Recently, the J-PAS collaboration made publicly available a first data release called mini-JPAS, which is actually a perfect test bench to explore the potential of this survey in many different topics. Using the mini-JPAS data set, I will briefly present some preliminary results involving the galaxy evolution studies that I am currently performing within the J-PAS collaboration, such as the potential of this survey to explore the stellar content of galaxies since intermediate redshift z~1, the evolution of the quiescent galaxy population, galaxies in the green valley, luminosity/stellar mass functions, etc. In addition, and owing to the uniqueness of this survey, I will discuss how this survey can also contribute to trace the mass distribution within massive galaxy clusters via gravitational lensing studies, more precisely via weak lensing/magnification bias effects.

09/01/2020 - 12:30
Dr. Luis Díaz García
ASIAA, Taiwan