TY - JOUR
T1 - CFHT MegaPrime/MegaCam u-band source catalogue of the AKARI North Ecliptic Pole Wide field
AU - Huang, Ting Chi
AU - Matsuhara, Hideo
AU - Goto, Tomotsugu
AU - Shim, Hyunjin
AU - Kim, Seong Jin
AU - Malkan, Matthew A.
AU - Hashimoto, Tetsuya
AU - Hwang, Ho Seong
AU - Oi, Nagisa
AU - Toba, Yoshiki
AU - Lee, Dongseob
AU - Santos, Daryl Joe D.
AU - Takagi, Toshinobu
N1 - Publisher Copyright:
© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - The infrared (IR) space telescope conducted two surveys (Deep and Wide) in the North Ecliptic Pole (NEP) field to find more than 100 000 IR sources using its infrared camera (IRC). IRC's nine filters, which cover wavebands from 2 to 24 μm continuously, make unique in comparison with other IR observatories such as. However, studies of the NEP-Wide field sources had been limited due to the lack of follow-up observations in the ultraviolet (UV) and optical. In this work, we present the Canada-France-Hawaii Telescope MegaPrime/MegaCam u-band source catalogue of the NEP-Wide field. The observations were taken in seven nights in 2015 and 2016, resulting in 82 observed frames covering 3.6 deg$^2$. The data reduction, image processing, and source extraction were performed in a standard procedure using the elixir pipeline and the astromatic software, and eventually 351 635 sources have been extracted. The data quality is discussed in two regions (shallow and deep) separately, due to the difference in the total integration time (4520 and 13 910 s). The 5 limiting magnitude, seeing full width at half-maximum, and the magnitude at 50 per cent completeness are 25.38 mag (25.79 mag in the deep region), 0.82 arcsec (0.94 arcsec), and 25.06 mag (25.45 mag), respectively. The u-band data provide us with critical improvements to photometric redshifts and UV estimates of the precious infrared sources from the space telescope.
AB - The infrared (IR) space telescope conducted two surveys (Deep and Wide) in the North Ecliptic Pole (NEP) field to find more than 100 000 IR sources using its infrared camera (IRC). IRC's nine filters, which cover wavebands from 2 to 24 μm continuously, make unique in comparison with other IR observatories such as. However, studies of the NEP-Wide field sources had been limited due to the lack of follow-up observations in the ultraviolet (UV) and optical. In this work, we present the Canada-France-Hawaii Telescope MegaPrime/MegaCam u-band source catalogue of the NEP-Wide field. The observations were taken in seven nights in 2015 and 2016, resulting in 82 observed frames covering 3.6 deg$^2$. The data reduction, image processing, and source extraction were performed in a standard procedure using the elixir pipeline and the astromatic software, and eventually 351 635 sources have been extracted. The data quality is discussed in two regions (shallow and deep) separately, due to the difference in the total integration time (4520 and 13 910 s). The 5 limiting magnitude, seeing full width at half-maximum, and the magnitude at 50 per cent completeness are 25.38 mag (25.79 mag in the deep region), 0.82 arcsec (0.94 arcsec), and 25.06 mag (25.45 mag), respectively. The u-band data provide us with critical improvements to photometric redshifts and UV estimates of the precious infrared sources from the space telescope.
KW - catalogues
KW - galaxies: evolution
KW - galaxies: photometry
KW - methods: data analysis
KW - surveys
KW - ultraviolet: galaxies
UR - http://www.scopus.com/inward/record.url?scp=85096990226&partnerID=8YFLogxK
U2 - 10.1093/mnras/staa2459
DO - 10.1093/mnras/staa2459
M3 - Article
AN - SCOPUS:85096990226
SN - 0035-8711
VL - 498
SP - 609
EP - 620
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -