J/ApJ/880/43 S2COSMOS: bright SCUBA-2 submm sources in COSMOS (Simpson+, 2019)
The East Asian Observatory SCUBA-2 survey of the COSMOS field: unveiling 1147
bright sub-millimeter sources across 2.6 square degrees.
Simpson J.M., Smail I., Swinbank A.M., Chapman S.C., Chen C.-C., Geach J.E.,
Matsuda Y., Wang R., Wang W.-H., Yang Y., Ao Y., Asquith R., Bourne N.,
Coogan R.T., Coppin K., Gullberg B., Hine N.K., Ho L.C., Hwang H.S.,
Ivison R.J., Kato Y., Lacaille K., Lewis A.J.R., Liu D., Michalowski M.J.,
Oteo I., Sawicki M., Scholtz J., Smith D., Thomson A.P., Wardlow J.L.
<Astrophys. J., 880, 43 (2019)>
=2019ApJ...880...43S 2019ApJ...880...43S
ADC_Keywords: Photometry, millimetric/submm; Surveys
Keywords: galaxies: high-redshift ; galaxies: starburst
Abstract:
We present sensitive 850µm imaging of the Cosmological Evolution
Survey (COSMOS) field using 640hr of new and archival observations
taken with SCUBA-2 at the East Asian Observatory's James Clerk Maxwell
Telescope. The SCUBA-2 COSMOS survey (S2COSMOS) achieves a median
noise level of σ850µm=1.2mJy/beam over an area of 1.6deg2
(MAIN; Hubble Space Telescope/Advanced Camera for Surveys footprint),
and σ850µm=1.7mJy/beam over an additional 1deg2 of
supplementary (supp) coverage. We present a catalog of 1020 and 127
sources detected at a significance level of >4σ and >4.3σ
in the main and supp regions, respectively, corresponding to a uniform
2% false-detection rate. We construct the single-dish 850µm number
counts at S850>2mJy and show that these S2COSMOS counts are in
agreement with previous single-dish surveys, demonstrating that
degree-scale fields are sufficient to overcome the effects of cosmic
variance in the S850=2-10mJy population. To investigate the
properties of the galaxies identified by S2COSMOS sources we measure
the surface density of near-infrared-selected galaxies around their
positions and identify an average excess of 2.0±0.2 galaxies within
a 13" radius (∼100kpc at z∼2). The bulk of these galaxies represent
near-infrared-selected submillimeter galaxies and/or spatially
correlated sources and lie at a median photometric redshift of
z=2.0±0.1. Finally, we perform a stacking analysis at submillimeter
and far-infrared wavelengths of stellar-mass-selected galaxies
(M*=1010-1012M☉) from z=0-4, obtaining high-significance
detections at 850µm in all subsets (signal-to-noise ratio,
S/N=4-30), and investigate the relation between far-infrared
luminosity, stellar mass, and the peak wavelength of the dust spectral
energy distribution. The publication of this survey adds a new deep,
uniform submillimeter layer to the wavelength coverage of this
well-studied COSMOS field.
Description:
Observations for the SCUBA-2 COSMOS (S2COSMOS) project were carried
out between 2016 January and 2017 June using the SCUBA-2 instrument on
the 15m James Clerk Maxwell Telescope (JCMT).
To map the full 2 sq. degree COSMOS field we adopt the observing
strategy used in observations of the field taken as part of S2CLS
(Geach+ 2017, J/MNRAS/465/1789), the forerunner to our S2COSMOS survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 1147 SCUBA-2 COSMOS (S2COSMOS) source catalog
table2.dat 81 16 S2COSMOS number counts
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See also:
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
VIII/95 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)
VIII/103 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)
J/ApJ/554/803 : New VLA Sky Survey (NVSS) Cat of IRAS 2Jy Gal. (Yun+ 2001)
J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005)
J/MNRAS/372/1621 : SCUBA Half-Degree Extragalactic Survey. II (Coppin+, 2006)
J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)
J/AJ/138/1261 : Spitzer/MIPS obs. of the COSMOS field (Frayer+, 2009)
J/ApJ/707/1201 : LABOCA ECDFS Submillimeter Survey (LESS) (Weiss+, 2009)
J/ApJ/719/763 : Millimeter-wave sources in the SPT survey (Vieira+, 2010)
J/MNRAS/415/3831 : AzTEC/ASTE source catalogue (Aretxaga+, 2011)
J/MNRAS/413/2314 : Radio & mid-IR counterpart of submm galaxies (Biggs+, 2011)
J/A+A/532/A90 : PACS Evolutionary Probe (PEP-DR1) catalogs (Lutz+, 2011)
J/A+A/544/A156 : UltraVISTA Catalogue Release DR1 (McCracken+, 2012)
J/MNRAS/426/1845 : AzTEC survey of the SHADES fields. II. (Michalowski+, 2012)
J/MNRAS/436/430 : SCUBA-2 cosmology legacy survey (Roseboom+, 2013)
J/MNRAS/436/1919 : SCUBA observations of COSMOS galaxies (Casey+, 2013)
J/ApJ/768/91 : ALMA observations of LESS submm galaxies (Hodge+, 2013)
J/ApJ/768/74 : PHIBSS: CO obs. of star-forming galaxies (Tacconi+, 2013)
J/ApJ/788/125 : An ALMA survey of ECDFS submm galaxies (Simpson+, 2014)
J/MNRAS/458/4321 : SCUBA-2 galaxies in 850um survey (Koprowski+, 2016)
J/MNRAS/462/1989 : HerMES Large Mode Survey catalogue (Asboth+, 2016)
J/ApJ/832/78 : SCUBA-2 & LABOCA obs. of HATLAS galaxies (Ivison+, 2016)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/ApJS/225/27 : 3D-HST Survey: grism spectra master cat. (Momcheva+, 2016)
J/ApJ/830/51 : FourStar gal. evolution survey (ZFOURGE) (Straatman+, 2016)
J/MNRAS/462/3146 : Herschel-ATLAS DR1 (HATLAS) (Valiante+, 2016)
J/ApJ/837/139 : SUPER GOODS. I. Ultradeep SCUBA-2 survey (Cowie+, 2017)
J/ApJ/840/78 : Redshift survey of ALMA SMGs in ECDFS (Danielson+, 2017)
J/ApJ/837/16 : Cosmic web of galaxies in the COSMOS field (Darvish+, 2017)
J/MNRAS/465/1789 : SCUBA-2 Cosmology Legacy Survey (Geach+, 2017)
J/ApJ/839/58 : ALMA submm galaxies multi-wavelength data (Simpson+, 2017)
J/A+A/602/A1 : VLA-COSMOS 3 GHz Large Project (Smolcic+, 2017)
J/MNRAS/464/3369 : SCUBA-2 EGS deep field (Zavala+, 2017)
J/MNRAS/469/492 : JCMT/SCUBA2 objects in COSMOS & UDS (Michalowski+ 2017)
J/ApJ/858/77 : DEIMOS 10K spec. survey in COSMOS field (Hasinger+, 2018)
J/ApJ/862/96 : Star-forming galaxies with LABOCA 870um obs. (Lewis+, 2018)
J/A+A/609/A30 : Monochromatic conversion factors to LIR (Schreiber+, 2018)
J/A+A/618/A85 : Spectroscopy of 3<z<4 quiescent galaxies (Schreiber+ 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- --- [S2COSMOS]
9- 23 A15 --- S2COSMOS S2COSMOS name (JHHMMSS+DDMMSS)
25- 32 A8 --- --- [S2COS850]
33 A1 --- --- [.]
34- 37 I04 --- S2COS850 S2COS850 sequential number
39- 40 I2 h RAh [9/10] Hour of Right Ascension (J2000)
42- 43 I2 min RAm Minute of Right Ascension (J2000)
45- 49 F5.2 s RAs Second of Right Ascension (J2000)
51 A1 --- DE- [+] Sign of Declination (J2000)
52- 53 I2 deg DEd [1/3] Degree of Declination (J2000)
55- 56 I2 arcmin DEm Arcminute of Declination (J2000)
58- 61 F4.1 arcsec DEs Arcsecond of Declination (J2000)
63- 66 F4.1 --- SNR [4/28.4] Signal-to-Noise ratio,
Observed 850um detection
68- 71 F4.1 mJy S850-obs [2/20.4] Observed SCUBA-2 850um flux density
73- 75 F3.1 mJy e_S850-obs [0.5/3] 1σ instrumental uncertainty
in S850-obs
77- 80 F4.1 mJy S850-deb [1.6/19.6] Deboosted 850um flux density
82- 84 F3.1 mJy E_S850-deb [0.7/4.1] Upper total 1σ uncertainty
on S850-deb
86- 88 F3.1 mJy e_S850-deb [0.7/4.8] Lower total 1σ uncertainty
on S850-deb
90- 93 A4 --- Sample Catalog type (1)
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Note (1): Catalog sample as follows:
MAIN = median noise level of σ850um=1.2mJy/beam over an area of
1.6deg2 (Hubble Space Telescope / Advanced Camera for Surveys
footprint);
SUPP = σ850um=1.7mJy/beam over an additional 1deg2 of supplementary
coverage.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 F4.1 mJy S850 [2/19] Observed SCUBA-2 850um flux
6- 11 F6.1 deg-2 NM [0.6/1920] Number of MAIN sources
with >S850
13- 16 F4.1 deg-2 E_NM [1.4/90] Upper Error on NM
18- 21 F4.1 deg-2 e_NM [0.8/90] Lower Error on NM
23- 28 F6.1 deg-2 NMS [0.4/1910] Number of MAIN+SUPP sources
with >S850
30- 33 F4.1 deg-2 E_NMS [1/90] Upper Error on NMS
35- 38 F4.1 deg-2 e_NMS [0.3/90] Lower Error on NMS
40- 43 F4.1 mJy S850p [2.2/20.5] Intrinsic 850um flux
45- 50 F6.1 deg-2/mJy dNM/dSp [0.2/1370] Differential counts, dN/dSp,
in MAIN
52- 56 F5.1 deg-2/mJy E_dNM/dSp [0.5/310] Upper Error on dNM/dSp
58- 62 F5.1 deg-2/mJy e_dNM/dSp [0.3/280] Lower Error on dNM/dSp
64- 69 F6.1 deg-2/mJy dNMS/dSp [0.1/1360] Differential counts, dN/dSp,
in MAIN+SUPP
71- 75 F5.1 deg-2/mJy E_dNMS/dSp [0.3/300] Upper Error on dNMS/dSp
77- 81 F5.1 deg-2/mJy e_dNMS/dSp [0.1/270] Lower Error on dNMS/dSp
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Jan-2021