J-PAS: The Javalambre-Physics of the Accelerated Universe Astrophysical Survey

BENITEZ, NARCISO; DUPKE, RENATO; MOLES, M; SODRÉ, LAERTE; CENARRO, A; MARÍN-FRANCH, A; TAYLOR, K; CRISTÓBAL, D; FERNANDEZ-SOTO, A; MENDES DE OLIVEIRA, CLAUDIA; CEPA-NOGUÉ, J; ABRAMO, RAUL; ALCANIZ, J; OVERZIER, R; HERNANDEZ-MONTEAGUDO, C; ALFARO, E; CANAAN, A; CARVANO, J; REIS, R; MARTINEZ GONZALEZ, E; ASCASO, BEGOÑA; BALLESTEROS, F; XAVIER, H; VARELA, J; EDEROCLITE, A; VAZQUEZ RAMIÓ, H; BROAD HURST, T; CYPRIANO, E; ANGULO, R; DIEGO, J; ZANDIVAREZ, ARIEL; DÍAZ GIMÉNEZ, EUGENIA; JPAS TEAM (120 AUTORES)

arXiv.org

Cornell University

Lugar: Los Álamos; Año: 2014 p. 1 - 215

2331-8422

The Javalambre-Physics of the Accelerated Universe Astrophysical Survey (J-PAS) is a narrow band, very wide field Cosmological Survey to be carried out from the Javalambre Observatory in Spain with a purpose-built, dedicated 2.5m telescope and a 4.7 sq.deg. camera with 1.2Gpix. Starting in late 2015, J-PAS will observe 8500sq.deg. of Northern Sky and measure 0.003(1+z) photo-z for 9×10^7 LRG and ELG galaxies plus several million QSOs, sampling an effective volume of ~14 Gpc^3 up to z=1.3 and becoming the first radial BAO experiment to reach Stage IV. J-PAS will detect 7×10^5 galaxy clusters and groups, setting constrains on Dark Energy which rival those obtained from its BAO measurements. Thanks to the superb characteristics of the site (seeing ~0.7 arcsec), J-PAS is expected to obtain a deep, sub-arcsec image of the Northern sky, which combined with its unique photo-z precision will produce one of the most powerful cosmological lensing surveys before the arrival of Euclid. J-PAS unprecedented spectral time domain information will enable a self-contained SN survey that, without the need for external spectroscopic follow-up, will detect, classify and measure sigma_z~0.5% redshifts for ~4000 SNeIa and ~900 core-collapse SNe. The key to the J-PAS potential is its innovative approach: a contiguous system of 54 filters with 145Armstrong width, placed 100Armstrongs apart over a multi-degree FoV is a powerful "redshift machine", with the survey speed of a 4000 multiplexing low resolution spectrograph, but many times cheaper and much faster to build. The J-PAS camera is equivalent to a 4.7 sq.deg. "IFU" and it will produce a time-resolved, 3D image of the Northern Sky with a very wide range of Astrophysical applications in Galaxy Evolution, the nearby Universe and the study of resolved stellar populations.