NEPSC2, the North Ecliptic Pole SCUBA-2 survey: 850-mu m map and catalogue of 850-mu m-selected sources over 2 deg(2)
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NEPSC2, the North Ecliptic Pole SCUBA-2 survey : 850-mu m map and catalogue of 850-mu m-selected sources over 2 deg(2). / Shim, Hyunjin; Kim, Yeonsik; Lee, Dongseob; Lee, Hyung Mok; Goto, Tomo; Matsuhara, Hideo; Scott, Douglas; Serjeant, Stephen; Ao, Yiping; Barrufet, Laia; Chapman, Scott; Clements, David L.; Conselice, Christopher J.; Greve, Thomas R.; Hashimoto, Tetsuya; Hwang, Ho Seong; Im, Myungshin; Jeong, Woong-Seob; Jiang, Linhua; Kim, Minjin; Kim, Seong Jin; Kong, Albert K. H.; Koprowski, Maciej; Marchetti, Lucia; Michalowski, Michal J.; Parsons, Harriet; Pearson, Chris; Seo, Hyunjong; Toba, Yoshiki; White, Glenn.
In: Monthly Notices of the Royal Astronomical Society, Vol. 498, No. 4, 11.2020, p. 5065-5079.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - NEPSC2, the North Ecliptic Pole SCUBA-2 survey
T2 - 850-mu m map and catalogue of 850-mu m-selected sources over 2 deg(2)
AU - Shim, Hyunjin
AU - Kim, Yeonsik
AU - Lee, Dongseob
AU - Lee, Hyung Mok
AU - Goto, Tomo
AU - Matsuhara, Hideo
AU - Scott, Douglas
AU - Serjeant, Stephen
AU - Ao, Yiping
AU - Barrufet, Laia
AU - Chapman, Scott
AU - Clements, David L.
AU - Conselice, Christopher J.
AU - Greve, Thomas R.
AU - Hashimoto, Tetsuya
AU - Hwang, Ho Seong
AU - Im, Myungshin
AU - Jeong, Woong-Seob
AU - Jiang, Linhua
AU - Kim, Minjin
AU - Kim, Seong Jin
AU - Kong, Albert K. H.
AU - Koprowski, Maciej
AU - Marchetti, Lucia
AU - Michalowski, Michal J.
AU - Parsons, Harriet
AU - Pearson, Chris
AU - Seo, Hyunjong
AU - Toba, Yoshiki
AU - White, Glenn
PY - 2020/11
Y1 - 2020/11
N2 - We present an 850-mu m mosaic map and extracted catalogue of submillimetre sources in the extended North Ecliptic Pole (NEP) region over about 2 deg(2). The 850-mu m map is constructed using newly obtained observations by SCUBA-2 at the East Asian Observatory's James Clerk Maxwell Telescope, carried out using the observatory's large programme opportunities. The recent 850-mu m survey has extended the submillimetre data coverage by almost a factor of 4 compared to previous surveys, with a depth of sigma(rms) = 1.0-2.3 mJy beam(-1). The catalogue contains 549 sources selected above a significance level of 4 sigma, where the false-detection rate is 10 per cent; a higher threshold of 4.5 sigma is required in order to achieve a false-detection rate below 3 per cent, which results in 342 sources being selected. Despite the large spatial variation of the noise, the deboosted flux density of sources is comparable to results from the SCUBA-2 Cosmology Legacy Survey, which covered the central 0.6 deg(2) of our survey area with better sensitivity. We construct the source counts at 850 mu m, finding results in agreement with other 850-mu m surveys in cosmological blank fields over S-850 = 4-15 mJy. We find a slight excess of bright galaxies (S-850 > 15 mJy), which can be considered to be at z(phot) = 2-4. The 850-mu m data add valuable long-wavelength information to mid-infrared-selected sources from the AKARI NEP-deep and NEP-wide surveys, which will be helpful in preparing for future near-infrared to millimetre wavelength observations in the NEP region. Our 850-mu m mosaic map and source catalogue will be made publicly available.
AB - We present an 850-mu m mosaic map and extracted catalogue of submillimetre sources in the extended North Ecliptic Pole (NEP) region over about 2 deg(2). The 850-mu m map is constructed using newly obtained observations by SCUBA-2 at the East Asian Observatory's James Clerk Maxwell Telescope, carried out using the observatory's large programme opportunities. The recent 850-mu m survey has extended the submillimetre data coverage by almost a factor of 4 compared to previous surveys, with a depth of sigma(rms) = 1.0-2.3 mJy beam(-1). The catalogue contains 549 sources selected above a significance level of 4 sigma, where the false-detection rate is 10 per cent; a higher threshold of 4.5 sigma is required in order to achieve a false-detection rate below 3 per cent, which results in 342 sources being selected. Despite the large spatial variation of the noise, the deboosted flux density of sources is comparable to results from the SCUBA-2 Cosmology Legacy Survey, which covered the central 0.6 deg(2) of our survey area with better sensitivity. We construct the source counts at 850 mu m, finding results in agreement with other 850-mu m surveys in cosmological blank fields over S-850 = 4-15 mJy. We find a slight excess of bright galaxies (S-850 > 15 mJy), which can be considered to be at z(phot) = 2-4. The 850-mu m data add valuable long-wavelength information to mid-infrared-selected sources from the AKARI NEP-deep and NEP-wide surveys, which will be helpful in preparing for future near-infrared to millimetre wavelength observations in the NEP region. Our 850-mu m mosaic map and source catalogue will be made publicly available.
KW - galaxies: evolution
KW - galaxies: photometry
KW - galaxies: starburst
KW - submillimetre: galaxies
KW - COSMOLOGY LEGACY SURVEY
KW - DEGREE EXTRAGALACTIC SURVEY
KW - DEEP-FIELD-SOUTH
KW - MU-M
KW - SUBMILLIMETER GALAXIES
KW - ALMA SURVEY
KW - STAR-FORMATION
KW - POPULATION
KW - DUST
KW - IDENTIFICATIONS
U2 - 10.1093/mnras/staa2621
DO - 10.1093/mnras/staa2621
M3 - Journal article
VL - 498
SP - 5065
EP - 5079
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 4
ER -
ID: 319531471