J/ApJ/889/80 STUDIES. III. SCUBA-2 450um gal. with MIPS & VLA obs. (Lim+, 2020) ================================================================================ SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). III. Multiwavelength properties, luminosity functions, and preliminary source catalog of 450 {mu}m selected galaxies. Lim C.-F., Wang W.-H., Smail I., Scott D., Chen C.-C., Chang Y.-Y., Simpson J.M., Toba Y., Shu X., Clements D., Greenslade J., Ao Y., Babul A., Birkin J., Chapman S.C., Cheng T.-A., Cho B.S., Dannerbauer H., Dudzeviciute U., Dunlop J., Gao Y., Goto T., Ho L.C., Hsu L.-T., Hwang H.S., Jeong W.-S., Koprowski M., Lee C.-H., Lin M.-Y., Lin W.-C., Michalowski M.J., Parsons H., Sawicki M., Shirley R., Shim H., Urquhart S., Wang J., Wang T. =2020ApJ...889...80L (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Galaxies, radio; Photometry, millimetric/submm; Photometry, infrared; Redshifts; Surveys Keywords: High-redshift galaxies; Galaxy evolution; Luminosity function Submillimeter astronomy Abstract: We construct a SCUBA-2 450{mu}m map in the COSMOS field that covers an area of 300arcmin^2^ and reaches a 1{sigma} noise level of 0.65mJy in the deepest region. We extract 256 sources detected at 450{mu}m with signal-to-noise ratios >4.0 and analyze the physical properties of their multiwavelength counterparts. We find that most of the sources are at z<~3, with a median of z=1.79_-0.15_^+0.03^%. About 35_-25_^+32^% of our sources are classified as starburst galaxies based on their total star formation rates (SFRs) and stellar masses (M_*_). By fitting the far-infrared spectral energy distributions, we find that our 450{mu}m selected sample has a wide range of dust temperatures (20K<~T_d_<~60K), with a median of T_d_=38.3_-0.9_^+0.4^K. We do not find a redshift evolution in dust temperature for sources with L_IR_>10^12^L_{sun}_ at z<3. However, we find a moderate correlation where the dust temperature increases with the deviation from the SFR-M_*_ relation. The increase in dust temperature also correlates with optical morphology, which is consistent with merger-triggered starbursts in submillimeter galaxies. Our galaxies do not show the tight IRX-{beta}_UV_ correlation that has been observed in the local universe. We construct the infrared luminosity functions of our 450{mu}m sources and measure their comoving SFR densities (SFRDs). The contribution of the L_IR_>10^12^L_{sun}_ population to the SFRD rises dramatically from z=0 to 2 ({propto}(1+z)^3.9+/-1.1^) and dominates the total SFRD at z>~2. Description: The SCUBA-2 data presented in this paper come from three sources: STUDIES (Wang+ 2017ApJ...850...37W), Casey+ (2013, J/MNRAS/436/191) work in the COSMOS field, and the SCUBA-2 Cosmology Legacy Survey (S2CLS; Geach+ 2013MNRAS.432...53G and 2017, J/MNRAS/465/1789). We combine these observations to produce an extremely deep 450um map. We also use the Very Large Array (VLA)-COSMOS Large Project survey conducted with the Jansky VLA at 3 GHz (Smolcic+ 2017, J/A+A/602/A2) and the S-COSMOS infrared imaging survey carried out with the Spitzer Space Telescope (Sanders+ 2007ApJS..172...86S). As the archival MIPS 24um catalog published by Sanders+ (2007ApJS..172...86S) contains only sources with S_24um_>150uJy, we generated our own 24um catalog using SExtractor (Bertin & Arnouts 1996A&AS..117..393B) and recalibrated the fluxes to the Spitzer General Observer (GO) Cycle 3 total fluxes released by the S-COSMOS team. See Section 2.2. In this paper, we adopt the spectroscopic redshift catalog of Hasinger+ (2018, J/ApJ/858/77), who compiled all of the spectroscopic data of about 10000 objects that were observed through multislit spectroscopy with the Deep Imaging Multi-Object Spectrograph on the Keck II telescope. In addition, we also use the data from the zCOSMOS survey (Lilly+ 2009, J/ApJS/184/218) conducted with the VIMOS spectrograph on the Very Large Telescope and the hCOSMOS redshift survey (Damjanov+ 2018, J/ApJS/234/21) observed with the Hectospec spectrograph on the MMT (formerly Multiple Mirror Telescope). See Section 4.2. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 142 134 Derived properties of VLA 3-GHz identified 450-um sources table3.dat 140 76 Derived properties of MIPS 24-um identified 450-um sources table4.dat 127 134 Multi-wavelength photometry for VLA 3-GHz identified 450-um sources table5.dat 128 76 Multi-wavelength photometry for MIPS 24-um identified 450-um sources table6.dat 56 46 List of 450-um sources without VLA 3GHz and MIPS 24um counterparts -------------------------------------------------------------------------------- See also: J/ApJ/614/671 : Hot, dusty ultraluminous galaxies at z~2 (Chapman+, 2004) J/ApJ/616/71 : Optical properties of SCUBA galaxies (Smail+, 2004) J/ApJS/155/271 : Chandra Deep Field-South: Opt. spectroscopy (Szokoly+, 2004) J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005) J/MNRAS/363/563 : SCUBA Half-Degree Extragalactic Survey. I. (Mortier+, 2005) J/A+A/463/519 : VVDS-VLA Deep Field: 610 MHz catalog (Bondi+, 2007) J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007) J/MNRAS/379/1571 : SCUBA Half-Degree Extragalactic Survey. IV (Aretxaga+, 2007) J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007) J/MNRAS/385/2225 : AzTEC millimetre survey of COSMOS field (Scott+, 2008) J/ApJ/692/556 : Star forming galaxy templates (Rieke+, 2009) J/ApJ/696/1195 : COSMOS AGN spectroscopic survey. I. (Trump+, 2009) J/MNRAS/397/281 : Radio imaging in Lockman Hole (Ibar+, 2009) J/ApJS/184/218 : The zCOSMOS 10k-bright spectroscopic sample (Lilly+, 2009) J/ApJ/707/1201 : LABOCA ECDFS Submillimeter Survey (LESS) (Weiss+, 2009) J/ApJ/715/572 : GOALS UV and FIR properties (Howell+, 2010) J/ApJ/719/763 : Millimeter-wave sources in the SPT survey (Vieira+, 2010) J/MNRAS/411/102 : AzTEC/ASTE 1.1mm observations in the ADF-S (Hatsukade+ 2011) J/MNRAS/415/3831 : AzTEC/ASTE source catalogue (Aretxaga+, 2011) J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011) J/A+A/545/A141 : UV selected sources in the GOODS-S field (Buat+, 2012) J/MNRAS/426/1845 : AzTEC survey of the SHADES fields. II. (Michalowski+, 2012) J/ApJ/761/140 : Spectroscopy of Herschel-SPIRE galaxies (Casey+, 2012) J/ApJ/762/83 : Massive early-type galaxies in K-band (Chang+, 2013) J/MNRAS/436/430 : SCUBA-2 cosmology legacy survey (Roseboom+, 2013) J/ApJ/779/61 : SPT-SZ point sources at 95, 150 & 220GHz (Mocanu+, 2013) J/MNRAS/436/1919 : SCUBA observations of COSMOS galaxies (Casey+, 2013) J/MNRAS/439/1556 : ACT high significance 148 & 218GHz sources (Marsden+, 2014) J/ApJ/788/125 : ALMA survey of ECDFS submillimeter galaxies (Simpson+, 2014) J/MNRAS/442/577 : ALESS submm galaxies radio properties (Thomson+, 2014) J/ApJ/793/115 : UV-continuum slopes beta for z~4-8 galaxies (Bouwens+, 2014) J/ApJ/806/110 : ALESS survey: SMGs in the ECDF-S data (da Cunha+, 2015) J/ApJ/820/82 : S2CLS: multiwavelength counterparts to SMGs (Chen+, 2016) J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016) J/MNRAS/458/4321 : SCUBA-2 galaxies in 850um survey (Koprowski+, 2016) J/ApJ/832/78 : SCUBA-2 & LABOCA obs. of HATLAS galaxies (Ivison+, 2016) J/MNRAS/464/3369 : SCUBA-2 EGS deep field (Zavala+, 2017) J/MNRAS/465/1789 : SCUBA-2 Cosmology Legacy Survey (Geach+, 2017) J/ApJ/837/139 : SUPER GOODS. I. Ultradeep SCUBA-2 survey (Cowie+, 2017) J/ApJ/839/58 : ALMA submm galaxies multi-wavelength data (Simpson+, 2017) J/A+A/602/A2 : VLA-COSMOS 3 GHz Large Project. II. (Smolcic+, 2017) J/MNRAS/469/492 : JCMT/SCUBA2 obs. in COSMOS & UDS fields (Michalowski+ 2017) J/ApJS/234/21 : hCOSMOS: Hectospec survey of COSMOS gal. (Damjanov+, 2018) J/ApJ/858/77 : DEIMOS 10K sp. survey in COSMOS field (Hasinger+, 2018) J/ApJ/865/103 : STUDIES. II. NIR morphologies of submm gal. (Chang+, 2018) J/ApJ/865/106 : SUPER GOODS. III. SCUBA-2 sources with ALMA (Cowie+, 2018) J/ApJ/880/43 : S2COSMOS: SCUBA-2 submm sources in COSMOS (Simpson+, 2019) Byte-by-byte Description of file: table[23].dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 h RAh [9/10] 450um Hour of Right Ascension (J2000) (G1) 4- 5 I2 min RAm 450um Minute of Right Ascension (J2000) (G1) 7- 11 F5.2 s RAs 450um Second of Right Ascension (J2000) (G1) 13 A1 --- DE- [+] 450um Sign of Declination (J2000) (G1) 14 I1 deg DEd [2] 450um Degree of Declination (J2000) (G1) 16- 17 I2 arcmin DEm [12/33] 450um Arcminute of Declination (J2000) (G1) 19- 23 F5.2 arcsec DEs 450um Arcsecond of Declination (J2000) (G1) 25- 26 I2 h RACh Hour of Right Ascension (J2000) (1) 28- 29 I2 min RACm Minute of Right Ascension (J2000) (1) 31- 35 F5.2 s RACs Second of Right Ascension (J2000) (1) 37 A1 --- DEC- Sign of Declination (J2000) (1) 38 I1 deg DECd Degree of Declination (J2000) (1) 40- 41 I2 arcmin DECm Arcminute of Declination (J2000) (1) 43- 47 F5.2 arcsec DECs Arcsecond of Declination (J2000) (1) 49- 53 F5.2 mJy S450 [1.9/42.3] The 450 micron flux density (G2) 55- 58 F4.2 mJy e_S450 [0.6/8.1] Uncertainty in S450 60- 64 F5.2 mJy S850 [1.4/14.3]? The 850 micron flux density (G2) 66- 69 F4.2 mJy e_S850 [0.1/1.6]? Uncertainty in S850 71- 74 F4.2 --- z [0.1/4.8]? Public redshift 76- 79 F4.2 --- e_z [0/1.9]? Uncertainty in z 81 I1 --- f_z [0/3] Flag on z (2) 83- 87 F5.2 [Msun] logM* [7.7/11.6]? Log stellar mass 89- 92 F4.2 [Msun] e_logM* [0.2/0.4]? Uncertainty in logM* (3) 94- 98 F5.2 [Lsun] logLUV [7.5/12.5]? Log GALEX UV luminosity (G3) 100- 103 F4.2 [Lsun] e_logLUV [0/0.5]? Uncertainty in logLUV 105- 109 F5.2 [Lsun] logLIR [10.2/13.4] Log IR luminosity 111- 114 F4.2 [Lsun] e_logLIR [0.03/0.6] Uncertainty in logLIR (3) 116- 120 F5.2 K Td [17/66]? Dust temperature 122- 126 F5.2 K e_Td [0.09/16]? Uncertainty in Td 128- 133 F6.2 --- betaUV [-11.3/11.6]? Dust UV emissivity spectral index 135- 138 F4.2 --- e_betaUV [0.2/4.4]? Uncertainty in betaUV 140- 142 A3 --- flag AGN flag (s) (4) -------------------------------------------------------------------------------- Note (1): VLA 3-GHz image coordinates (Table 2) or MIPS 24-um image coordinates (Table 3). Note (2): Flag as follows: 1 = spectroscopic redshift; 2 = photometric redshift; 3 = FIR redshift. Note (3): Derived from LE PHARE code (Arnouts+ 1999MNRAS.310..540A & Ilbert+ 2006A&A...457..841I) by including the photometric errors in each waveband but without including the redshift uncertainties. Note (4): AGN flag as follows: 1 = X-ray AGN; 2 = mid-infrared AGN; 3 = radio excess. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table[45].dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 h RAh [9/10] 450um Hour of Right Ascension (J2000) (G1) 4- 5 I2 min RAm 450um Minute of Right Ascension (J2000) (G1) 7- 11 F5.2 s RAs 450um Second of Right Ascension (J2000) (G1) 13 A1 --- DE- [+] 450um Sign of Declination (J2000) (G1) 14 I1 deg DEd [2] 450um Degree of Declination (J2000) (G1) 16- 17 I2 arcmin DEm [12/33] 450um Arcminute of Declination (J2000) (G1) 19- 23 F5.2 arcsec DEs 450um Arcsecond of Declination (J2000) (G1) 25- 26 I2 h RAOh ? Optical Hour of Right Ascension (J2000) 28- 29 I2 min RAOm ? Optical Minute of Right Ascension (J2000) 31- 35 F5.2 s RAOs ? Optical Second of Right Ascension (J2000) 37 A1 --- DEO- ? Optical Sign of Declination (J2000) (G1) 38 I1 deg DEOd ? Optical Degree of Declination (J2000) 40- 41 I2 arcmin DEOm ? Optical Arcminute of Declination (J2000) 43- 47 F5.2 arcsec DEOs ? Optical Arcsecond of Declination (J2000) 49- 53 F5.2 mag rmag [19.19/26.9]? Apparent Subaru/Suprime-cam r band magnitude (G3) 55- 58 F4.2 mag e_rmag [0/0.41]? Uncertainty in rmag 60- 64 F5.2 mag Ksmag [17.57/24.4]? Apparent VISTA/VIRCAM K_s_ band magnitude (G3) 66- 69 F4.2 mag e_Ksmag [0/0.28]? Uncertainty in Ksmag 71- 75 F5.2 mJy S3.6 [17.26/23.62]? The Spitzer/IRAC 3.6um flux density (from Sanders+ 2007ApJS..172...86S) 77- 80 F4.2 mJy e_S3.6 [0/0.06]? Uncertainty in S3.6 82- 86 F5.2 mJy S250 [0.7/87] The Herschel/SPIRE 250um flux density (G4) 88- 91 F4.2 mJy e_S250 [0.7/3.8] Uncertainty in S250 93- 97 F5.2 mJy S450 [1.98/42.3] The JCMT/SCUBA-2 450um flux density (G2) 99- 102 F4.2 mJy e_S450 [0.6/8.1] Uncertainty in S450 104- 108 F5.2 mJy S850 [1.45/14.3]? The JCMT/SCUBA-2 850um flux density (G2) 110- 113 F4.2 mJy e_S850 [0.1/1.6]? Uncertainty in S850 115- 121 F7.2 mJy SC The VLA 3GHz (Table 4) or MISP 24um (Table 5) flux density 123- 128 F6.2 mJy e_SC Uncertainty in SC -------------------------------------------------------------------------------- Byte-by-byte Description of file: table6.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 h RAh [10] Hour of Right Ascension (J2000) 4- 5 I2 min RAm [0] Minute of Right Ascension (J2000) 7- 11 F5.2 s RAs Second of Right Ascension (J2000) 13 A1 --- DE- [+] 450um Sign of Declination (J2000) (G1) 14 I1 deg DEd [2] Degree of Declination (J2000) 16- 17 I2 arcmin DEm [11/34] Arcminute of Declination (J2000) 19- 23 F5.2 arcsec DEs Arcsecond of Declination (J2000) 25- 29 F5.2 mJy S250 [0.2/46] The Herschel/SPIRE 250um flux density (G4) 31- 34 F4.2 mJy e_S250 [0.4/3.1] Uncertainty in S250 36- 40 F5.2 mJy S450 [2.16/51.2] The JCMT/SCUBA-2 450um flux density (G2) 42- 46 F5.2 mJy e_S450 [0.6/13.7] Uncertainty in S450 48- 51 F4.2 mJy S850 [1.4/5]? The JCMT/SCUBA-2 850um flux density (G2) 53- 56 F4.2 mJy e_S850 [0.1/0.3]? Uncertainty in S850 -------------------------------------------------------------------------------- Global notes: Note (G1): In the 450 micron image. The positional error at 90% confidence interval is ~4" in radius (see more in Section A). Note (G2): Corrected for flux boosting. Note (G3): GALEX UV, Suprime-cam/Subaru r-band and VIRCAM/VISTA Ks-band from COSMOS2015 (Laigle+, 2016, J/ApJS/224/24) Note (G4): Herschel/SPIRE 250um flux estimated from XID+ (Hurley+ 2017MNRAS.464..885H) with our 450-um sources as positional priors (see Section 2.2). -------------------------------------------------------------------------------- History: From electronic version of the journal References: Wang et al. 2017ApJ...850...37W Chang et al. Paper II. 2018ApJ...865..103C Cat. J/ApJ/865/103 Lim et al. Paper III. 2020ApJ...889...80L This catalog Lim et al. Paper IV. 2020ApJ...895..104L ================================================================================ (End) Prepared by [AAS], Emmanuelle Perret [CDS] 19-Oct-2021