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19 April 2024 |
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Near-Infrared Survey and Photometric Redshifts in the Extended GOODS-North field | | Li-Ting Hsu
; Lihwai Lin
; Mark Dickinson
; Haojing Yan
; Hsieh Bau-Ching
; Wei-Hao Wang
; Chien-Hsiu Lee
; Chi-Hung Yan
; Douglas Scott
; S. P. Willner
; Masami Ouchi
; Matthew L. N. Ashby
; Yi-Wen Chen
; Emanuele Daddi
; David Elbaz
; Giovanni G. Fazio
; Sebastien Foucaud
; Jiasheng Huang
; David C. Koo
; Glenn Morrison
; Frazer Owen
; Maurilio Pannella
; Alexendra Pope
; Luc Simard
; Shiang-Yu Wang
; | | Date: |
31 Dec 2018 | | 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
$
m{deg}^{2}$. The observations were taken using WIRCam on the 3.6-m Canada
France Hawaii Telescope (CFHT). Together with the reprocessed $K_{
m s}$-band
image, the $5sigma$ limiting AB magnitudes (in 2" diameter apertures) are
24.7, 24.2, and 24.4 AB mag in the $J$, $H$, and $K_{
m s}$ 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. | | Source: | arXiv, 1901.0013 | | Services: | Forum | Review | PDF | Favorites | |
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