J-PAS begins mapping the sky

2023-10-18 10:15 all data releases
The J-PAS data look in comparison with available spectroscopic data. The background image is a small region in one of the J-PAS i-band exposures. The insets present J-spectra for a few objects in the field. Credit: Centro de Estudios de Física del Cosmos de Aragón (CEFCA).
It will observe hundreds of millions of galaxies to improve our understanding of the accelerating expansion of the Universe.

First J-PAS data release

2019-12-02 08:30 all data releases
Color image of an area of ​​the sky observed with J-PAS
The Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS) releases the first set of data, corresponding to a sky area of one square degree observed at the well-known Extended Groth Strip. The data release contains a catalogue of more than 60,000 astronomical objects, each of them having more than a thousand parameters, including multi-band photometry in the unique set of 56 narrow-band (14 nm width) optical filters of J-PAS.