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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Photometry and photometric redshift catalogs for the Lockman hole deep field
Astrophysical Journal, Supplement Series, Volume 198, No. 1, Article 1, Year 2012
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Description
We present broadband photometry and photometric redshifts for 187,611 sources located in 0.5 deg2 in the Lockman Hole area. The catalog includes 388 X-ray-detected sources identified with the very deep XMM-Newton observations available for an area of 0.2 deg2. The source detection was performed on the R c-, z′-, and B-band images and the available photometry is spanning from the far-ultraviolet to the mid-infrared, reaching in the best-case scenario 21 bands. Astrometry corrections and photometric cross-calibrations over the entire data set allowed the computation of accurate photometric redshifts. Special treatment is undertaken for the X-ray sources, the majority of which are active galactic nuclei (AGNs). For normal galaxies, comparing the photometric redshifts to the 253 available spectroscopic redshifts, we achieve an accuracy of σΔz/(1 + z) = 0.036, with 12.6% outliers. For the X-ray-detected sources, compared to 115 spectroscopic redshifts, the accuracy is σΔz/(1 + z) = 0.069, with 18.3% outliers, where the outliers are defined as sources with |z phot - z spec| > 0.15 × (1 + z spec). These results are a significant improvement over the previously available photometric redshifts for normal galaxies in the Lockman Hole, while it is the first time that photometric redshifts are computed and made public for AGNs for this field. © 2012. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Fotopoulou, Sotiria
Germany, Garching Bei Munchen
Max Planck Institute for Plasma Physics
Germany, Munich
Technische Universität München
Salvato, Mara
Germany, Garching Bei Munchen
Max Planck Institute for Plasma Physics
Germany, Munich
Technische Universität München
Hasinger, Guenther H.
Germany, Garching Bei Munchen
Max Planck Institute for Plasma Physics
United States, Honolulu
University of Hawaiʻi at Mānoa
Brusa, Marcella
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Egami, Eiichi E.
United States, Tucson
The University of Arizona
Lutz, Dieter
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Burwitz, Vadim
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Henry, J. Patrick
United States, Honolulu
University of Hawaiʻi at Mānoa
Rigopoulou, Dimitra
United Kingdom, Didcot
Rutherford Appleton Laboratory
United Kingdom, Oxford
University of Oxford
Vaccari, Mattia
Italy, Padua
Università Degli Studi Di Padova
Statistics
Citations: 42
Authors: 10
Affiliations: 10
Identifiers
Doi:
10.1088/0067-0049/198/1/1
ISSN:
00670049