J/MNRAS/494/3828 ALMA survey of the SCUBA-2 CLS UDS field (Dudzeviciute+, 2020)
An ALMA survey of the SCUBA-2 CLS UDS field: physical properties of 707
sub-millimetre galaxies.
Dudzeviciute U., Smail I., Swinbank A.M., Stach S.M., Almaini O.,
da Cunha E., An F.X., Arumugam V., Birkin J., Blain A.W., Chapman S.C.,
Chen C.-C., Conselice C.J., Coppin K.E.K., Dunlop J.S., Farrah D.,
Geach J.E., Gullberg B., Hartley W.G., Hodge J.A., Ivison R.J.,
Maltby D.T., Scott D., Simpson C.J., Simpson J.M., Thomson A.P., Walter F.,
Wardlow J.L., Weiss A., van der Werf P.
<Mon. Not. R. Astron. Soc., 494, 3828-3860 (2020)>
=2020MNRAS.494.3828D 2020MNRAS.494.3828D (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry ; Redshifts ; Extinction ; Optical ;
Infrared ; Radio sources
Keywords: galaxies: high-redshift - galaxies: starburst -
submillimetre: galaxies
Abstract:
We analyse the physical properties of a large, homogeneously selected
sample of ALMA-located sub-millimetre galaxies (SMGs). This survey,
AS2UDS, identified 707 SMGs across the ∼1deg2 field, including ∼17
per cent, which are undetected at K≥25.7mag. We interpret their
ultraviolet-to-radio data using MAGPHYS and determine a median
redshift of z=2.61±0.08 (1σ range of z=1.8-3.4) with just ∼6
per cent at z>4. Our survey provides a sample of massive dusty
galaxies at z≥1, with median dust and stellar masses of
Md=(6.8±0.3)x108M☉ (thus, gas masses of ∼1011M☉)
and M*=(1.26±0.05)x1011M☉. We find no evolution in dust
temperature at a constant far-infrared luminosity across z∼1.5-4. The
gas mass function of our sample increases to z∼2-3 and then declines
at z>3. The space density and masses of SMGs suggest that almost all
galaxies with M*≥3x1011M☉ have passed through an SMG-like
phase. The redshift distribution is well fit by a model combining
evolution of the gas fraction in haloes with the growth of halo mass
past a critical threshold of Mh∼6x1012M☉, thus SMGs may
represent the highly efficient collapse of gas-rich massive haloes. We
show that SMGs are broadly consistent with simple homologous systems
in the far-infrared, consistent with a centrally illuminated
starburst. Our study provides strong support for an evolutionary link
between the active, gas-rich SMG population at z>1 and the formation
of massive, bulge-dominated galaxies across the history of the
Universe.
Description:
In this study, we investigated the physical properties of 707
ALMA-identified sub-millimetre galaxies from the AS2UDS survey (Stach
et al. 2019MNRAS.487.4648S 2019MNRAS.487.4648S), with flux densities in the range
S870=0.6-13.6mJy (with a median of 3.7mJy). We fit spectral energy
distribution models to the available photometry in 22 bands (from the
UV to radio wavelengths) of each SMG using MAGPHYS, deriving physical
properties such as their photometric redshifts, stellar and dust
masses and far-infrared luminosities.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 1217 707 The AS2UDS catalogue containing the results for
all 707 SMGs from this study
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See also:
J/MNRAS/465/1789 : SCUBA-2 Cosmology Legacy Survey (Geach+, 2017)
II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 6 F6.1 --- ALMA ALMA identifier (1)
8- 19 F12.9 deg RAdeg Right ascension (J2000)
21- 33 F13.10 deg DEdeg Declination (J2000)
35- 53 F19.16 mJy F870 ALMA 870µm flux from Stach et al.
(2019MNRAS.487.4648S 2019MNRAS.487.4648S)
55- 73 F19.17 mJy e_F870 Error on F870
75- 92 F18.15 mag umag ?=99.0 UKIDSS aperture corrected u-band
AB magnitude
94- 115 F22.19 mag e_umag ?=99.0 Error on umag
117- 134 F18.15 mag Bmag ?=99.0 UKIDSS aperture corrected B-band
AB magnitude
136- 157 F22.19 mag e_Bmag ?=99.0 Error on Bmag
159- 176 F18.15 mag Vmag ?=99.0 UKIDSS aperture corrected V-band
AB magnitude
178- 199 F22.19 mag e_Vmag ?=99.0 Error on Vmag
201- 218 F18.15 mag Rmag ?=99.0 UKIDSS aperture corrected R-band
AB magnitude
220- 241 F22.19 mag e_Rmag ?=99.0 Error on Rmag
243- 260 F18.15 mag imag ?=99.0 UKIDSS aperture corrected i-band
AB magnitude
262- 284 F23.20 mag e_imag ?=99.0 Error on imag
286- 303 F18.15 mag zmag ?=99.0 UKIDSS aperture corrected z-band
AB magnitude
305- 326 F22.19 mag e_zmag ?=99.0 Error on zmag
328- 345 F18.15 mag Ymag ?=99.0 UKIDSS aperture corrected Y-band
AB magnitude
347- 368 F22.19 mag e_Ymag ?=99.0 Error on Ymag
370- 387 F18.15 mag Jmag ?=99.0 UKIDSS aperture corrected J-band
AB magnitude
389- 410 F22.19 mag e_Jmag ?=99.0 Error on Jmag
412- 429 F18.15 mag Hmag ?=99.0 UKIDSS aperture corrected H-band
AB magnitude
431- 452 F22.19 mag e_Hmag ?=99.0 Error on Hmag
454- 471 F18.15 mag Kmag ?=99.0 UKIDSS aperture corrected K-band
AB magnitude
473- 494 F22.19 mag e_Kmag ?=99.0 Error on Kmag
496 I1 --- f_Kmag [0/4]? Flag on Kmag (2)
498- 502 A5 --- bestgal [true /false] Indicates a subset of
galaxies classed to have best
photometry and no contamination flags
in the DR11
504- 516 F13.10 mag IRACCH1 ?=99.0 IRAC CH1 2arcsec aperture
corrected magnitude
518- 530 F13.10 mag IRACCH2 ?=99.0 IRAC CH2 2arcsec aperture
corrected magnitude
532- 544 F13.10 mag IRACCH3 ?=99.0 IRAC CH3 2arcsec aperture
corrected magnitude
546- 558 F13.10 mag IRACCH4 ?=99.0 IRAC CH4 2arcsec aperture
corrected magnitude
560 I1 --- fIRAC [0/1] IRAC flag (3)
562- 582 F21.18 mJy F24 ?=99.0 MIPS 24µm flux
584- 604 F21.18 mJy e_F24 ?=99.0 Error on F24
606- 615 F10.7 mJy F100 ?=99.0 PACS 100µm flux (4)
617- 621 F5.2 mJy e_F100 ?=99.0 Error on F100 (4)
623- 633 F11.7 mJy F160 ?=99.0 PACS 160µm flux (4)
635- 639 F5.2 mJy e_F160 ?=99.0 Error on F160 (4)
641- 651 F11.7 mJy F250 SPIRE 250µm flux (4)
653- 663 F11.7 mJy e_F250 Error on F250 (4)
665- 675 F11.7 mJy F350 SPIRE 350µm flux (4)
677- 687 F11.7 mJy e_F350 Error on F350 (4)
689- 698 F10.6 mJy F500 SPIRE 500µm flux (4)
700- 708 F9.7 mJy e_F500 Error on F500 (4)
710- 729 F20.15 mJy F1.4 ?=99.0 VLA radio flux at 1.4GHz
731- 749 F19.16 mJy e_F1.4 ?=99.0 Error on F1.4
751- 755 F5.3 --- zphot Photometric redshift
757- 774 F18.16 --- b_zphot Lower bound (16th percentile) on zphot
776- 793 F18.16 --- B_zphot Upper bound (84th percentile) on zphot
795- 800 F6.3 [Msun] logM Logarithm of the stellar mass
802- 819 F18.15 [Msun] b_logM Lower bound (16th percentile) on logM
821- 838 F18.15 [Msun] B_logM Upper bound (84th percentile) on logM
840- 844 F5.3 mag AV V-band dust attenuation
846- 865 F20.17 mag b_AV Lower bound (16th percentile) on AV
867- 885 F19.16 mag B_AV Upper bound (84th percentile) on AV
887- 892 F6.3 --- Mlh H-band mass-to-light ratio
894- 914 F21.18 --- b_Mlh Lower bound (16th percentile) on Mlh
916- 936 F21.18 --- B_Mlh Upper bound (84th percentile) on Mlh
938- 942 F5.3 [yr] logAge Logarithm of the mass-weighted age
944- 961 F18.16 [yr] b_logAge Lower bound (16th percentile) on logAge
963- 980 F18.16 [yr] B_logAge Upper bound (84th percentile) on logAge
982- 987 F6.3 [Msun/yr] logSFR Logarithm of the star-formation rate
989- 1007 F19.16 [Msun/yr] b_logSFR Lower bound (16th percentile) on logSFR
1009- 1027 F19.16 [Msun/yr] B_logSFR Upper bound (84th percentile) on logSFR
1029- 1034 F6.3 [Lsun] logLdust Logarithm of the far-infrared
luminosity
1036- 1053 F18.15 [Lsun] b_logLdust Lower bound (16th percentile) on
logLdust
1055- 1072 F18.15 [Lsun] B_logLdust Upper bound (84th percentile) on
logLdust
1074- 1078 F5.2 K Tdust Dust temperature
1080- 1097 F18.15 K b_Tdust Lower bound (16th percentile) on Tdust
1099- 1116 F18.15 K B_Tdust Upper bound (84th percentile) on Tdust
1118- 1122 F5.3 [Msun] logMdust Logarithm of the dust mass
1124- 1140 F17.15 [Msun] b_logMdust Lower bound (16th percentile) on
logMdust
1142- 1158 F17.15 [Msun] B_logMdust Upper bound (84th percentile) on
logMdust
1160 I1 --- zeroerr [0/1] Number of zero errors (5)
1162- 1179 F18.15 K Tdustmbb Dust temperature from a modified
blackbody fit
1181- 1198 F18.15 K b_Tdustmbb Lower bound (16th percentile) on
Tdustmbb
1200- 1217 F18.15 K B_Tdustmbb Upper bound (84th percentile) on
Tdustmbb
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Note (1): The identifier comprises a 4-digit numbers giving the source
identifier from the parent S2CLS survey and a final digit which
identifies the individual galaxies detected with ALMA in each S2CLS
source with ascending numbers for descending flux from Stach et al.
(2019MNRAS.487.4648S 2019MNRAS.487.4648S)
Note (2): Flag as follows:
0 = there is a good match between the ALMA and K band centroids
1 = K-band photometry might be contaminated
2 = K-band photometry is contaminated
3 = the ALMA source is K undetected
4 = no K band coverage
Note (3): Flag as follows:
0 = no contamination in IRAC photometry
1 = IRAC photometry possibly contaminated
Note (4): Negative entries indicate a 3σ limit for a given source
Note (5): Flag as follows:
0 = no zero errors in the outputs
1 = source had at least one zero error in the output parameter values
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History:
From electronic version of the journal
(End) Ana Fiallos [CDS] 31-May-2023