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SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm

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SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm. / Wang, Wei-Hao; Lin, Wei-Ching; Lim, Chen-Fatt et al.
In: The Astrophysical Journal, Vol. 850, No. 1, 37, 14.11.2017.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wang, W-H, Lin, W-C, Lim, C-F, Smail, I, Chapman, SC, Zheng, XZ, Shim, H, Kodama, T, Almaini, O, Ao, Y, Blain, AW, Bourne, N, Bunker, AJ, Chang, Y-Y, Chao, DC-Y, Chen, C-C, Clements, DL, Conselice, CJ, Cowley, WI, Dannerbauer, H, Dunlop, JS, Geach, JE, Goto, T, Jiang, L, Ivison, RJ, Jeong, W-S, Kohno, K, Kong, X, Lee, C-H, Lee, HM, Lee, M, Michałowski, MJ, Oteo, I, Sawicki, M, Scott, D, Shu, XW, Simpson, JM, Tee, W-L, Toba, Y, Valiante, E, Wang, J-X, Wang, R & Wardlow, JL 2017, 'SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm', The Astrophysical Journal, vol. 850, no. 1, 37. https://doi.org/10.3847/1538-4357/aa911b

APA

Wang, W.-H., Lin, W.-C., Lim, C.-F., Smail, I., Chapman, S. C., Zheng, X. Z., Shim, H., Kodama, T., Almaini, O., Ao, Y., Blain, A. W., Bourne, N., Bunker, A. J., Chang, Y.-Y., Chao, D. C.-Y., Chen, C.-C., Clements, D. L., Conselice, C. J., Cowley, W. I., ... Wardlow, J. L. (2017). SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm. The Astrophysical Journal, 850(1), Article 37. https://doi.org/10.3847/1538-4357/aa911b

Vancouver

Wang WH, Lin WC, Lim CF, Smail I, Chapman SC, Zheng XZ et al. SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm. The Astrophysical Journal. 2017 Nov 14;850(1):37. doi: 10.3847/1538-4357/aa911b

Author

Wang, Wei-Hao ; Lin, Wei-Ching ; Lim, Chen-Fatt et al. / SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm. In: The Astrophysical Journal. 2017 ; Vol. 850, No. 1.

Bibtex

@article{e913b7b9b334422a96da8b1504648a28,
title = "SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm",
abstract = "The SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES) is a three-year JCMT Large Program aiming to reach the 450 μm confusion limit in the COSMOS-CANDELS region to study a representative sample of the high-redshift far-infrared galaxy population that gives rise to the bulk of the far-infrared background. We present the first-year data from STUDIES. We reached a 450 μm noise level of 0.91 mJy for point sources at the map center, covered an area of 151 arcmin2, and detected 98 and 141 sources at 4.0σ and 3.5σ, respectively. Our derived counts are best constrained in the 3.5-25 mJy regime using directly detected sources. Below the detection limits, our fluctuation analysis further constrains the slope of the counts down to 1 mJy. The resulting counts at 1-25 mJy are consistent with a power law having a slope of -2.59 (±0.10 for 3.5-25 mJy, and {}-0.7+0.4 for 1-3.5 mJy). There is no evidence of a faint-end termination or turnover of the counts in this flux density range. Our counts are also consistent with previous SCUBA-2 blank-field and lensing-cluster surveys. The integrated surface brightness from our counts down to 1 mJy is 90.0 ± 17.2 Jy deg-2, which can account for up to {83}-16+15 % of the COBE 450 μm background. We show that Herschel counts at 350 and 500 μm are significantly higher than our 450 μm counts, likely caused by its large beam and source clustering. High angular resolution instruments like SCUBA-2 at 450 μm are therefore highly beneficial for measuring the luminosity and spatial density of high-redshift dusty galaxies.",
keywords = "galaxies: high-redshift, galaxies: evolution, submillimeter: galaxies, cosmology: cosmic background radiation",
author = "Wei-Hao Wang and Wei-Ching Lin and Chen-Fatt Lim and Ian Smail and Chapman, {Scott C.} and Zheng, {Xian Zhong} and Hyunjin Shim and Tadayuki Kodama and Omar Almaini and Yiping Ao and Blain, {Andrew W.} and Nathan Bourne and Bunker, {Andrew J.} and Yu-Yen Chang and Chao, {Dani C.-Y.} and Chian-Chou Chen and Clements, {David L.} and Conselice, {Christopher J.} and Cowley, {William I.} and Helmut Dannerbauer and Dunlop, {James S.} and Geach, {James E.} and Tomotsugu Goto and Linhua Jiang and Ivison, {Rob J.} and Woong-Seob Jeong and Kotaro Kohno and Xu Kong and Chien-Hsu Lee and Lee, {Hyung Mok} and Minju Lee and Micha{\l}owski, {Micha{\l} J.} and Iv{\'a}n Oteo and Marcin Sawicki and Douglas Scott and Shu, {Xin Wen} and Simpson, {James M.} and Wei-Leong Tee and Yoshiki Toba and Elisabetta Valiante and Jun-Xian Wang and Ran Wang and Wardlow, {Julie L.}",
year = "2017",
month = nov,
day = "14",
doi = "10.3847/1538-4357/aa911b",
language = "English",
volume = "850",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-end Counts at 450 μm

AU - Wang, Wei-Hao

AU - Lin, Wei-Ching

AU - Lim, Chen-Fatt

AU - Smail, Ian

AU - Chapman, Scott C.

AU - Zheng, Xian Zhong

AU - Shim, Hyunjin

AU - Kodama, Tadayuki

AU - Almaini, Omar

AU - Ao, Yiping

AU - Blain, Andrew W.

AU - Bourne, Nathan

AU - Bunker, Andrew J.

AU - Chang, Yu-Yen

AU - Chao, Dani C.-Y.

AU - Chen, Chian-Chou

AU - Clements, David L.

AU - Conselice, Christopher J.

AU - Cowley, William I.

AU - Dannerbauer, Helmut

AU - Dunlop, James S.

AU - Geach, James E.

AU - Goto, Tomotsugu

AU - Jiang, Linhua

AU - Ivison, Rob J.

AU - Jeong, Woong-Seob

AU - Kohno, Kotaro

AU - Kong, Xu

AU - Lee, Chien-Hsu

AU - Lee, Hyung Mok

AU - Lee, Minju

AU - Michałowski, Michał J.

AU - Oteo, Iván

AU - Sawicki, Marcin

AU - Scott, Douglas

AU - Shu, Xin Wen

AU - Simpson, James M.

AU - Tee, Wei-Leong

AU - Toba, Yoshiki

AU - Valiante, Elisabetta

AU - Wang, Jun-Xian

AU - Wang, Ran

AU - Wardlow, Julie L.

PY - 2017/11/14

Y1 - 2017/11/14

N2 - The SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES) is a three-year JCMT Large Program aiming to reach the 450 μm confusion limit in the COSMOS-CANDELS region to study a representative sample of the high-redshift far-infrared galaxy population that gives rise to the bulk of the far-infrared background. We present the first-year data from STUDIES. We reached a 450 μm noise level of 0.91 mJy for point sources at the map center, covered an area of 151 arcmin2, and detected 98 and 141 sources at 4.0σ and 3.5σ, respectively. Our derived counts are best constrained in the 3.5-25 mJy regime using directly detected sources. Below the detection limits, our fluctuation analysis further constrains the slope of the counts down to 1 mJy. The resulting counts at 1-25 mJy are consistent with a power law having a slope of -2.59 (±0.10 for 3.5-25 mJy, and {}-0.7+0.4 for 1-3.5 mJy). There is no evidence of a faint-end termination or turnover of the counts in this flux density range. Our counts are also consistent with previous SCUBA-2 blank-field and lensing-cluster surveys. The integrated surface brightness from our counts down to 1 mJy is 90.0 ± 17.2 Jy deg-2, which can account for up to {83}-16+15 % of the COBE 450 μm background. We show that Herschel counts at 350 and 500 μm are significantly higher than our 450 μm counts, likely caused by its large beam and source clustering. High angular resolution instruments like SCUBA-2 at 450 μm are therefore highly beneficial for measuring the luminosity and spatial density of high-redshift dusty galaxies.

AB - The SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES) is a three-year JCMT Large Program aiming to reach the 450 μm confusion limit in the COSMOS-CANDELS region to study a representative sample of the high-redshift far-infrared galaxy population that gives rise to the bulk of the far-infrared background. We present the first-year data from STUDIES. We reached a 450 μm noise level of 0.91 mJy for point sources at the map center, covered an area of 151 arcmin2, and detected 98 and 141 sources at 4.0σ and 3.5σ, respectively. Our derived counts are best constrained in the 3.5-25 mJy regime using directly detected sources. Below the detection limits, our fluctuation analysis further constrains the slope of the counts down to 1 mJy. The resulting counts at 1-25 mJy are consistent with a power law having a slope of -2.59 (±0.10 for 3.5-25 mJy, and {}-0.7+0.4 for 1-3.5 mJy). There is no evidence of a faint-end termination or turnover of the counts in this flux density range. Our counts are also consistent with previous SCUBA-2 blank-field and lensing-cluster surveys. The integrated surface brightness from our counts down to 1 mJy is 90.0 ± 17.2 Jy deg-2, which can account for up to {83}-16+15 % of the COBE 450 μm background. We show that Herschel counts at 350 and 500 μm are significantly higher than our 450 μm counts, likely caused by its large beam and source clustering. High angular resolution instruments like SCUBA-2 at 450 μm are therefore highly beneficial for measuring the luminosity and spatial density of high-redshift dusty galaxies.

KW - galaxies: high-redshift

KW - galaxies: evolution

KW - submillimeter: galaxies

KW - cosmology: cosmic background radiation

U2 - 10.3847/1538-4357/aa911b

DO - 10.3847/1538-4357/aa911b

M3 - Journal article

VL - 850

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 37

ER -