Near-Infrared Survey and Photometric Redshifts in the Extended GOODS-North field

Abstract

We present deep $J$ and $H$-band images in the extended Great Observatories Origins Deep Survey-North (GOODS-N) field covering an area of 0.22 ${\mathrm{deg}}^2$. The observations were taken using WIRCam on the 3.6-m Canada France Hawaii Telescope (CFHT). Together with the reprocessed $K_{\mathrm{s}}$-band image, the $5\sigma$ limiting AB magnitudes (in 2" diameter apertures) are 24.7, 24.2, and 24.4 AB mag in the $J$, $H$, and $K_{\mathrm{s}}$ bands, respectively. We also release a multi-band photometry and photometric redshift catalog containing 93598 sources. For non-X-ray sources, we obtained a photometric redshift accuracy ${\sigma }_{\mathrm{NMAD}}=0.036$ with an outlier fraction $\eta =7.3\%$. 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. (2016) 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 ${\sigma }_{\mathrm{NMAD}}=0.040$ with $\eta =10.5\%$. 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-HST catalog, which fit these sources with galaxy-only templates.

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Cited by in corpus (6)

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• A new estimate of the cosmic star formation density from a radio-selected sample, and the contribution of $H$-dark galaxies at $z\ge 3$
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• Probing the Star Formation Main Sequence down to $10^8$ M${}_{\odot }$ at $1.0<z<3.0$
• NOEMA Redshift Measurements of Extremely Bright Submillimeter Galaxies Near the GOODS-N
• From naked spheroids to disky galaxies: how do massive disk galaxies shape their morphology?