Ponente
Descripción
The PAU Survey (PAUS) is an innovative photometric survey with 40 narrow bands at the William Herschel Telescope (WHT). The narrow bands are spaced at 100A intervals covering the range 4500A to 8500A and, in combination with standard broad bands, enable excellent redshift precision. Using BCNz2, a new photometric redshift code developed for this purpose, we characterise the photometric redshift performance using PAUS data on the COSMOS field. Comparison to secure spectra from zCOSMOS DR3 shows that PAUS achieves sigma68 / (1+z) = 0.0037 to i < 22.5 when selecting the best 50% of the sources based on a photometric redshift quality cut. Furthermore, a higher photo-z precision sigma68 / (1+z) = 0.001 is obtained for a bright and high quality selection, which is driven by the identification of emission lines. This talk discuss the PAU survey progress, photometric redshift and application of deep learning to determine PAUS redshifts. We conclude that PAUS meets its design goals, opening up a hitherto uncharted regime of deep, wide, and dense galaxy survey with precise redshifts that will provide unique insights into the formation, evolution and clustering of galaxies, as well as their intrinsic alignments.
