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Statistical Challenges in the Photometric Calibration for 21st Century Cosmology: The J-PAS case

Published online by Cambridge University Press:  01 July 2015

Jesús Varela ,
David Cristóbal-Hornillos ,
Javier Cenarro ,
Alessadro Ederoclite ,
David Muniesa ,
Héctor Vázquez Ramió ,
Nicolas Gruel  and
Mariano Moles
Jesús Varela
Affiliation:
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, Planta 2 E-44001, Teruel, Spain N email: [email protected]
David Cristóbal-Hornillos
Affiliation:
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, Planta 2 E-44001, Teruel, Spain N email: [email protected]
Javier Cenarro
Affiliation:
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, Planta 2 E-44001, Teruel, Spain N email: [email protected]
Alessadro Ederoclite
Affiliation:
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, Planta 2 E-44001, Teruel, Spain N email: [email protected]
David Muniesa
Affiliation:
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, Planta 2 E-44001, Teruel, Spain N email: [email protected]
Héctor Vázquez Ramió
Affiliation:
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, Planta 2 E-44001, Teruel, Spain N email: [email protected]
Nicolas Gruel
Affiliation:
University of Sheffield, Department of Physics and Astronomy, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, United Kingdom
Mariano Moles
Affiliation:
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, Planta 2 E-44001, Teruel, Spain N email: [email protected]
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Abstract

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The success of many cosmological surveys in the near future is highly grounded on the quality of their photometry. The Javalambre-PAU Astrophysical Survey (J-PAS) will image more than 8500 deg2 of the Northern Sky Hemisphere in 54 narrow + 2 medium/broad optical bands plus Sloan u, g and r bands. The main goal of J-PAS is to provide the best constrains on the cosmological parameters before the arrival of projects like Euclid or LSST. To achieve this goal the uncertainty in photo-z cannot be larger than 0.3% for several millions of galaxies and this is highly dependent on the photometric accuracy.

The photometric calibration of J-PAS will imply the intensive use of huge amounts of data and the use of statistical tools is unavoidable. Here, we present some of the key steps in the photometric calibration of J-PAS that will demand a suitable statistical approach.

Keywords

Cosmology: observationstechniques: photometricmethods: data analysis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S306: Statistical Challenges in 21st Century Cosmology , May 2014 , pp. 359 - 361
Copyright
Copyright © International Astronomical Union 2015 

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