Near-infrared Survey and Photometric Redshifts in the Extended GOODS-North Field

We present deep J- and H-band images in the extended Great Observatories Origins Deep Survey-North field covering an area of 0.22 deg2. The observations were taken using WIRCam on the 3.6 m Canada-France-Hawaii Telescope. Together with the reprocessed Ks-band image, the 5 limiting AB magnitudes (in...

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Bibliographic Details
Published in:The Astrophysical journal 2019-02, Vol.871 (2), p.233
Main Authors: Hsu, Li-Ting, Lin, Lihwai, Dickinson, Mark, Yan, Haojing, Bau-Ching, Hsieh, Wang, Wei-Hao, Lee, Chien-Hsiu, Yan, Chi-Hung, Scott, Douglas, Willner, S. P., Ouchi, Masami, Ashby, Matthew L. N., Chen, Yi-Wen, Daddi, Emanuele, Elbaz, David, Fazio, Giovanni G., Foucaud, Sebastien, Huang, Jiasheng, Koo, David C., Morrison, Glenn, Owen, Frazer, Pannella, Maurilio, Pope, Alexendra, Simard, Luc, Wang, Shiang-Yu
Format: Article
Language:English
Subjects:
Active galactic nuclei
Apertures
Astrophysics
Galaxies
galaxies: active
galaxies: distances and redshifts
galaxies: photometry
Hubble Space Telescope
Infrared astronomy
Infrared photometry
Observatories
Outliers (statistics)
Photometry
Polls & surveys
Red shift
Space telescopes
X ray sources
X-rays: galaxies
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Description
Summary:We present deep J- and H-band images in the extended Great Observatories Origins Deep Survey-North field covering an area of 0.22 deg2. The observations were taken using WIRCam on the 3.6 m Canada-France-Hawaii Telescope. Together with the reprocessed Ks-band image, the 5 limiting AB magnitudes (in 2″ diameter apertures) are 24.7, 24.2, and 24.4 AB mag in the J, H, and Ks bands, respectively. We also release a multiband photometry and photometric redshift catalog containing 93,598 sources. For non-X-ray sources, we obtained a photometric redshift accuracy NMAD = 0.036 with an outlier fraction = 7.3%. For X-ray sources, which are mainly active galactic nuclei (AGNs), we cross-matched our catalog with the updated 2M-CDFN X-ray catalog from Xue et al. and found that 658 out of 683 X-ray sources have counterparts. GALEX UV data are included in the photometric redshift computation for the X-ray sources to give NMAD = 0.040 with = 10.5%. Our approach yields more accurate photometric redshift estimates compared to previous works in this field. In particular, by adopting AGN-galaxy hybrid templates, our approach delivers photometric redshifts for the X-ray counterparts with fewer outliers compared to the 3D-Hubble Space Telescope catalog, which fit these sources with galaxy-only templates.
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/aaf9a7