A1 Journal article – refereed
J-PLUS: The Javalambre Photometric Local Universe Survey




List of Authors: Cenarro AJ, Moles M, Cristobal-Hornillos D, Marin-Franch A, Ederoclite A, Varela J, Lopez-Sanjuan C, Hernandez-Monteagudo C, Angulo RE, Ramio HV, Viironen K, Bonoli S, Orsi AA, Hurier G, San Roman I, Greisel N, Vilella-Rojo G, Diaz-Garcia LA, Logrono-Garcia R, Gurung-Lopez S, Spinoso D, Izquierdo-Villalba D, Aguerri JAL, Prieto CA, Bonatto C, Carvano JM, Chies-Santos AL, Daflon S, Dupke RA, Falcon-Barroso J, Goncalves DR, Jimenez-Teja Y, Molino A, Placco VM, Solano E, Whitten DD, Abril J, Anton JL, Bello R, de Toledo SB, Castillo-Ramirez J, Chueca S, Civera T, Diaz-Martin MC, Dominguez-Martinez M, Garzaran-Calderaro J, Hernandez-Fuertes J, Iglesias-Marzoa R, Iniguez C, Ruiz JMJ, Kruuse K, Lamadrid JL, Lasso-Cabrera N, Lopez-Alegre G, Lopez-Sainz A, Maicas N, Moreno-Signes A, Muniesa DJ, Rodriguez-Llano S, Rueda-Teruel F, Rueda-Teruel S, Soriano-Laguia I, Tilve V, Valdivielso L, Yanes-Diaz A, Alcaniz JS, de Oliveira CM, Sodre L, Coelho P, De Oliveira RL, Tamm A, Xavier HS, Abramo LR, Akras S, Alfaro EJ, Alvarez-Candal A, Ascaso B, Beasley MA, Beers TC, Fernandes MB, Bruzual GR, Buzzo ML, Carrasco JM, Cepa J, Cortesi A, Costa-Duarte MV, De Pra M, Favole G, Galarza A, Galbany L, Garcia K, Delgado RMG, Gonzalez-Serrano JI, Gutierrez-Soto LA, Hernandez-Jimenez JA, Kanaan A, Kuncarayakti H, Landim RCG, Laur J, Licandro J, Neto GBL, Lyman JD, Apellaniz JM, Miralda-Escude J, Morate D, Nogueira-Cavalcante JP, Novais PM, Oncins M, Oteo I, Overzier RA, Pereira CB, Rebassa-Mansergas A, Reis RRR, Roig F, Sako M, Salvador-Rusinol N, Sampedro L, Sanchez-Blazquez P, Santos WA, Schmidtobreick L, Siffert BB, Telles E, Vilchez JM, Vilchez JM, Telles E, Siffert BB
Publisher: EDP SCIENCES S A
Publication year: 2019
Journal: Astronomy and Astrophysics
Journal name in source: ASTRONOMY & ASTROPHYSICS
Journal acronym: ASTRON ASTROPHYS
Volume number: 622
Number of pages: 25
ISSN: 1432-0746
eISSN: 1432-0746

Abstract
The Javalambre Photometric Local Universe Survey (J-PLUS) is an ongoing 12-band photometric optical survey, observing thousands of square degrees of the Northern Hemisphere from the dedicated JAST/T80 telescope at the Observatorio Astrofisico de Javalambre (OAJ). The T80Cam is a camera with a field of view of 2 deg(2) mounted on a telescope with a diameter of 83 cm, and is equipped with a unique system of filters spanning the entire optical range (3500-10 000 angstrom). This filter system is a combination of broad-, medium-, and narrow-band filters, optimally designed to extract the rest-frame spectral features (the 3700-4000 angstrom Balmer break region, H delta, Ca H+K, the G band, and the Mg b and Ca triplets) that are key to characterizing stellar types and delivering a low-resolution photospectrum for each pixel of the observed sky. With a typical depth of AB similar to 21.25 mag per band, this filter set thus allows for an unbiased and accurate characterization of the stellar population in our Galaxy, it provides an unprecedented 2D photospectral information for all resolved galaxies in the local Universe, as well as accurate photo-z estimates (at the delta z/(1 + z) similar to 0.005-0.03 precision level) for moderately bright (up to r similar to 20 mag) extragalactic sources. While some narrow-band filters are designed for the study of particular emission features ([O II]/lambda 3727, H alpha/lambda 6563) up to z < 0.017, they also provide well-defined windows for the analysis of other emission lines at higher redshifts. As a result, 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 approximate to 0.77, 2.2, and 4.4, quasi-stellar objects, etc.). With this paper, we release the first similar to 1000 deg(2) of J-PLUS data, containing about 4.3 million stars and 3.0 million galaxies at r < 21 mag. With a goal of 8500 deg(2) for the total J-PLUS footprint, these numbers are expected to rise to about 35 million stars and 24 million galaxies by the end of the survey.

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