The J-PAS and J-PLUS large sky surveys: an unprecedented view of the Universe in multi-colors

The Observatorio Astrofísico de Javalambre (OAJ), managed and operated by the Centro de Estudios de Física del Cosmos de Aragón (CEFCA), is mostly devoted to conduct large sky multi-filter surveys with two large field of view telescopes of 2.5m and 80cm and their respective panoramic instrumentation. The main survey to be carried out in the next years is J-PAS (Javalambre Physics of the Accelerating Universe Astrophysical Survey). Conceived as a Dark Energy experiment that will provide photo-z’s for millions of galaxies at the 0.3% accuracy to do BAOs, SNe, galaxy clusters and weak lensing, J-PAS is expected to reach thousands of square degrees of the sky visible from Javalambre with a set of 54 narrow-band contiguous optical filters plus 5 broader ones, performing in the end as a low resolution integral field unit for the Northern hemisphere. In this sense it will provide unprecedented spectral energy distributions for every pixel of the sky, and ultimately for hundreds of millions of galaxies and stars. In advance, J-PLUS (Javalambre Photometric Local Universe Survey) has already started to observe the same sky area of J-PAS with 12 broad, intermediate and narrow-band filters sensitive to spectral features that are key to characterize both the stellar types in the Milky Way and the stellar populations and SFRs of nearby galaxies. J-PLUS has the potential to contribute to a wide range of fields in Astrophysics, both in the nearby universe (Milky Way structure, globular clusters, 2D IFU-like studies, stellar populations of nearby and moderate redshift galaxies, clusters of galaxies) and at high redshifts (emission line galaxies at z ≈ 0.77, 2.2 and 4.4, quasi stellar objects, etc), aiming to achieve tens of millions of stars and galaxies by the end of the survey. More than 1000 square degrees of sky have been completed by J-PLUS so far. Both J-PAS and J-PLUS will provide unprecedented multi-color views of the Universe that will be made publicly available to the community as legacy projects. In this talk I will present the OAJ, J-PAS and J-PLUS, their respective motivations, deployment and current status, to end up with some first scientific results in several areas of Astrophysics.