Special Universe Talk: The J-PAS and J-PLUS surveys: the sky in multi-color

by Silvia Bonoli (CEFCA, Spain)

Tuesday 22 Aug 2017, 14:00 → 15:00 Europe/Berlin

seminar room, basement (Universe Cluster, Boltzmannstr. 2, Garching)

Abstract: Medium-band photometric surveys, such as COMBO-17, COSMOS and ALHAMBRA, have shown to have the ability to unveil unique information on galaxy evolution, from the near to the distant universe. Ongoing and upcoming large narrow-band surveys will push this further, providing effectively a low-resolution spectra for every pixel of the sky observed. In this talk Silvia will present two large photometric surveys, J-PLUS and J-PAS, carried out at the OAJ observatory, a dedicated facility in continental Spain. J-PLUS, which has already observed few hundreds of square degrees, is scanning the sky with twelve filters, a carefully chosen mix of broad bands and narrow-band filters, able to capture unique galaxy spectral features. She will present the first science verification results, from the IFU-like analysis of local galaxies, to the selection of rare high-redshift emission galaxies and quasars. Silvia will then present forecasts for the J-PAS survey, which will soon start to observe thousands of square degrees with 54 narrow-band filters covering the entire optical range. Its high spectro-photometric resolution, the wide area covered and the unprecedented depth, will make J-PAS a very powerful tool to unbiasedly study the diversity of galaxies across cosmic time, as well as performing complementary cosmological experiments. Silvia is a Cluster guest. Local host: Mara Salvato (MPE)