2011MNRAS.415.1479W


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.15CEST07:22:30

2011MNRAS.415.1479W - Mon. Not. R. Astron. Soc., 415, 1479-1508 (2011/August-1)

The LABOCA survey of the Extended Chandra Deep Field-South: a photometric redshift survey of submillimetre galaxies.

WARDLOW J.L., SMAIL I., COPPIN K.E.K., ALEXANDER D.M., BRANDT W.N., DANIELSON A.L.R., LUO B., SWINBANK A.M., WALTER F., WEISS A., XUE Y.Q., ZIBETTI S., BERTOLDI F., BIGGS A.D., CHAPMAN S.C., DANNERBAUER H., DUNLOP J.S., GAWISER E., IVISON R.J., KNUDSEN K.K., KOVACS A., LACEY C.G., MENTEN K.M., PADILLA N., RIX H.-W. and VAN DER WERF P.P.

Abstract (from CDS):

We derive photometric redshifts from 17-band optical to mid-infrared photometry of 78 robust radio, 24-µm and Spitzer IRAC counterparts to 72 of the 126 submillimetre galaxies (SMGs) selected at 870 µm by LABOCA observations in the Extended Chandra Deep Field-South (ECDF-S). We test the photometric redshifts of the SMGs against the extensive archival spectroscopy in the ECDF-S. The median photometric redshift of identified SMGs is z= 2.2±0.1, the standard deviation is σz= 0.9 and we identify 11 (∼15 per cent) high-redshift (z ≥ 3) SMGs. A statistical analysis of sources in the error circles of unidentified SMGs identifies a population of possible counterparts with a redshift distribution peaking at z= 2.5±0.2, which likely comprises ∼60 per cent of the unidentified SMGs. This confirms that the bulk of the undetected SMGs are coeval with those detected in the radio/mid-infrared. We conclude that at most ∼15 per cent of all the SMGs are below the flux limits of our IRAC observations and thus may lie at z≳ 3 and hence at most ∼30 per cent of all SMGs have z≳ 3. We estimate that the full S_870 µm_> 4 mJy SMG population has a median redshift of 2.5±0.5. In contrast to previous suggestions, we find no significant correlation between submillimetre flux and redshift. The median stellar mass of the SMGs derived from spectral energy distribution fitting is (9.1±0.5) {x} 1010 Malthough we caution that the uncertainty in the star formation histories results in a factor of ∼5 uncertainty in these stellar masses. Using a single temperature modified blackbody fit with β= 1.5, the median characteristic dust temperature of SMGs is 37.4±1.4 K. The infrared luminosity function shows that SMGs at z= 2-3 typically have higher far-infrared luminosities and luminosity density than those at z= 1-2. This is mirrored in the evolution of the star formation rate density (SFRD) for SMGs which peaks at z∼ 2. The maximum contribution of bright SMGs to the global SFRD (∼5 per cent for SMGs with S_870 µm_≳ 4 mJy or ∼50 per cent extrapolated to SMGs with S_870 µm_> 1 mJy) also occurs at z∼ 2.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): galaxies: evolution - galaxies: high-redshift - galaxies: starburst - submillimetre: galaxies

VizieR on-line data: <Available at CDS (J/MNRAS/415/1479): table2.dat table3.dat>

Simbad objects: 93

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Number of rows : 93

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ALESS J033110.07-275236.7 G 03 31 10.07 -27 52 36.7           ~ 10 0
2 LESS J033110.5-275233 PaG 03 31 10.47 -27 52 33.2           ~ 6 0
3 ALESS J033121.92-274941.4 G 03 31 21.92 -27 49 41.4           ~ 11 0
4 LESS J033122.6-275417 PaG 03 31 22.64 -27 54 17.2           ~ 4 0
5 ALESS J033122.66-275417.2 G 03 31 22.66 -27 54 17.2           ~ 12 0
6 LESS J033124.5-275040 PaG 03 31 24.45 -27 50 40.9           ~ 4 1
7 ALESS J033124.47-275038.1 G 03 31 24.47 -27 50 38.1 26.26 25.30 25.22 24.59 24.07 ~ 11 0
8 ALESS J033124.72-275047.1 G 03 31 24.72 -27 50 47.1   24.85 24.56 24.37 24.13 ~ 17 0
9 LESS J033126.8-275554 PaG 03 31 26.83 -27 55 54.6           ~ 8 0
10 ALESS J033127.19-275551.3 G 03 31 27.19 -27 55 51.3 25.14 23.86 23.60 23.42 23.38 ~ 19 0
11 ATCDFS J033127.51-274440.1 G 03 31 27.57 -27 44 39.7 25.94 24.18 23.73 23.39 22.79 ~ 16 0
12 [CCC2011] 2 G 03 31 27.60 -27 39 28.0 26.42       24.09 ~ 10 0
13 ALESS J033129.92-275722.7 G 03 31 29.90 -27 57 22.7       26.11 24.61 ~ 25 0
14 [BII2011] MIPS J033131.2040-273238.469 G 03 31 31.2272 -27 32 39.111 25.06 24.42 24.32 24.34 24.58 ~ 9 0
15 [MBR2003] CDFS-H 692 G 03 31 39.55 -27 41 19.7 24.83 23.77 23.44 23.28 22.94 ~ 35 0
16 LESS J033140.1-275631 G 03 31 40.1741 -27 56 22.412         24.51 ~ 9 0
17 [DSS2017] 172 AGN 03 31 40.99 -27 44 35.2 24.34 23.70 23.38 22.90 22.19 ~ 19 0
18 [HKS2013] ALESS 070.1 G 03 31 44.03 -27 38 35.8 25.19 23.87 23.78 23.41 23.61 ~ 27 0
19 ALESS J033145.03-273436.7 G 03 31 45.0493 -27 34 37.060 25.44 25.17 24.77 24.15 23.91 ~ 14 0
20 ALESS J033146.92-273239.3 G 03 31 46.9496 -27 32 39.547     26.20 25.60   ~ 15 0
21 [CCC2011] 29 G 03 31 48.94 -28 02 13.6           ~ 9 0
22 LESS J033149.7-273432 G 03 31 49.73 -27 34 32.7           ~ 3 0
23 ALESS J033149.79-275740.8 G 03 31 49.7741 -27 57 40.439           ~ 11 0
24 [BII2011] IRAC J033149.8854-273430.428 G 03 31 49.8854 -27 34 30.428           ~ 2 0
25 [BII2011] IRAC J033149.9238-273436.790 G 03 31 49.9238 -27 34 36.790   26.14 25.88 25.35   ~ 2 0
26 LESS J033150.8-274438 PaG 03 31 50.81 -27 44 38.5           ~ 26 0
27 ALESS J033151.11-274437.3 AGN 03 31 51.11 -27 44 37.6 25.31 24.52 24.21 23.66 23.05 ~ 40 0
28 [SYW2010] AzTEC/GS15 G 03 31 51.6370 -27 45 52.262 27.28 26.70 26.20 25.58   ~ 9 0
29 [LBX2017] 42 Sy2 03 31 51.94 -27 53 27.2 26.57 25.14 25.38 24.74   ~ 55 0
30 [HKS2013] ALESS 014.1 G 03 31 52.4870 -28 03 18.934     26.71     ~ 17 0
31 SIMPLE 45144 G 03 31 53.1189 -27 39 38.555           ~ 5 0
32 LESS J033154.2-275109 PaG 03 31 54.22 -27 51 09.8           ~ 19 0
33 ALESS J033154.50-275105.6 AGN 03 31 54.50 -27 51 05.6 26.42 25.10 25.03 24.48 24.22 ~ 33 0
34 [MBF2013] 244 G 03 31 54.88 -27 53 41.3 26.78 25.42 25.10 24.98 24.27 ~ 14 0
35 LESS J033155.2-275345 GrG 03 31 55.19 -27 53 45.3           ~ 7 0
36 [HKS2013] ALESS 025.1 G 03 31 56.8845 -27 59 39.653 26.78 26.02 25.46 25.04 24.45 ~ 12 0
37 LESS J033201.0-280025 G 03 32 00.9468 -28 00 26.467   26.53 25.52 24.29 24.17 ~ 4 0
38 ALESS J033205.12-274652.1 AGN 03 32 04.90 -27 46 47.5 26.11 25.041 25.34 26.10 23.974 ~ 41 0
39 LESS J033207.6-275123 G 03 32 07.3105 -27 51 20.849 25.15 24.47 24.26 23.94 23.27 ~ 9 0
40 LESS J033208.1-275818 PaG 03 32 08.10 -27 58 18.7           ~ 10 0
41 ALESS J033208.26-275814.2 G 03 32 08.26 -27 58 14.2 27.01 27.04 26.39 26.79   ~ 15 0
42 ALESS J033209.61-274107.7 G 03 32 09.6084 -27 41 06.983 26.87 26.32 26.61 25.87   ~ 13 0
43 ALESS J033211.34-275211.9 G 03 32 11.3737 -27 52 12.139           ~ 23 0
44 ALESS J033213.85-275600.3 AGN 03 32 13.846 -27 56 00.09 27.86 28.22 27.73 25.6 25.90 ~ 50 0
45 ALESS J033217.64-275230.3 G 03 32 17.6163 -27 52 28.483 24.98 23.7434 23.67 23.06 21.9383 ~ 25 0
46 [SYW2010] AzTEC/GS45 G 03 32 18.6870 -27 37 43.145 25.04 24.49 24.01 23.29 21.79 ~ 6 0
47 ALESS J033219.02-275219.4 G 03 32 19.06 -27 52 14.8           ~ 20 0
48 [BII2011] VLA J033219.0632-275214.829 G 03 32 19.0632 -27 52 14.829 26.29 25.53 25.60 25.05 24.61 ~ 7 0
49 EIS-DEEP CDFS-3 J 1 1593 G 03 32 19.3006 -27 52 19.340 27.45 25.9147 25.79 24.28 23.1215 ~ 25 0
50 ALESS J033221.60-275624.0 G 03 32 21.60 -27 56 24.0 26.37 22.010 24.84 24.261 23.61 ~ 21 0
51 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1871 1
52 ALESS J033229.29-275619.7 QSO 03 32 29.2912 -27 56 19.465     26.76 25.82 25.1655 ~ 103 0
53 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 650 0
54 [DSS2017] 1914 G 03 32 36.5309 -27 34 53.363 26.55 25.55 25.09 24.44 23.45 ~ 5 0
55 LESS J033237.8-273202 G 03 32 38.0090 -27 31 59.927           ~ 4 0
56 VCDFS 39980 G 03 32 40.048 -27 38 08.64 25.56 24.73 24.03 23.327 21.91 ~ 24 0
57 ALESS J033243.20-275514.3 AGN 03 32 43.1879 -27 55 14.295 26.14 24.85 24.52 24.42 24.2641 ~ 55 0
58 LESS J033243.3-275517 PaG 03 32 43.28 -27 55 17.9           ~ 32 0
59 LESS J033243.6-273353 G 03 32 43.6418 -27 33 56.925 26.97 26.08 26.33     ~ 5 0
60 [SWM2014] GOODS-S 11763 AGN 03 32 46.84416 -27 51 21.2040 24.82 24.4861 24.07 24.202 23.595 ~ 35 0
61 AzTEC J033247.86-275419.3 G 03 32 47.9995 -27 54 16.497           ~ 12 0
62 ALESS J033248.86-273113.3 G 03 32 48.8558 -27 31 12.868 26.98         ~ 15 0
63 LESS J033251.1-273143 GrG 03 32 51.09 -27 31 43.0           ~ 6 0
64 LESS J033256.0-273317 G 03 32 55.99 -27 33 18.9 27.05 26.31 25.58 25.26   ~ 4 0
65 ALESS J033256.96-280100.7 G 03 32 56.9734 -28 01 01.204 26.57 25.95 24.94 24.00 22.91 ~ 17 0
66 LESS J033302.5-275643 PaG 03 33 02.50 -27 56 43.6           ~ 19 0
67 ALESS J033302.69-275642.8 G 03 33 02.69 -27 56 42.8 25.67 24.78 24.65 24.39 24.08 ~ 24 0
68 ALESS J033303.82-274418.2 G 03 33 03.82 -27 44 18.2 27.66 26.89 26.67   24.36 ~ 12 0
69 ALESS J033306.64-274802.4 G 03 33 06.6365 -27 48 01.919 28.17         ~ 12 0
70 LESS J033308.5-280044 G 03 33 08.49 -28 00 42.8 25.39 25.05 24.69 24.25 23.28 ~ 12 0
71 ALESS J033309.15-274817.2 G 03 33 09.3454 -27 48 15.998           ~ 15 0
72 [DSS2017] 1710 QSO 03 33 12.624 -27 55 51.61 21.92 20.82 20.62 20.40 19.99 ~ 28 0
73 LESS J033314.3-275611 GrG 03 33 14.26 -27 56 11.2           ~ 7 0
74 ALESS J033314.41-275611.6 G 03 33 14.41 -27 56 11.6 28.44         ~ 16 0
75 LESS J033315.6-274523 G 03 33 15.4267 -27 45 24.430 26.46 24.90 24.08 23.37 22.22 ~ 13 0
76 [HSN2014] 66507 AGN 03 33 16.51610 -27 50 39.4670 21.25 19.64 19.11 18.60 18.02 ~ 35 0
77 ATCDFS J033316.75-280016.0 G 03 33 16.75 -28 00 16.0   26.25 25.66 25.53   ~ 16 0
78 LESS J033317.5-275121 G 03 33 17.53 -27 51 27.5 25.50 24.95 24.59 24.08 23.18 ~ 4 0
79 [HKS2013] ALESS 003.1 G 03 33 21.5113 -27 55 20.515           ~ 17 0
80 BLAST J033324-273432 G 03 33 25.1978 -27 34 25.322 25.06 23.82 23.31 22.79 22.38 ~ 15 0
81 LESS J033325.4-273400 G 03 33 25.3661 -27 33 58.314           ~ 10 0
82 LESS J033328.5-275655 G 03 33 28.5832 -27 56 54.376   26.77 25.99   24.60 ~ 10 0
83 [DSS2017] 9332 AGN 03 33 31.97 -27 54 10.3 21.03 21.18 21.13 20.79 20.64 ~ 33 0
84 LESS J033333.4-275930 PaG 03 33 33.36 -27 59 30.1           ~ 5 0
85 ALESS J033335.60-274023.0 G 03 33 35.5719 -27 40 22.963   26.93 26.24 25.98 24.97 ~ 11 0
86 LESS J033336.0-275347 PaG 03 33 36.04 -27 53 47.6   26.19 25.33 24.18 23.45 ~ 4 0
87 ALESS J033336.90-275809.3 G 03 33 36.8866 -27 58 09.382           ~ 13 0
88 LESS J033336.8-274401 G 03 33 36.9881 -27 43 58.749   25.53 25.71 25.15 24.31 ~ 12 0
89 [MFK2008] J033340.11-273949.7 G 03 33 40.1122 -27 39 49.684 26.83 25.66 25.67 25.86 25.65 ~ 8 0
90 ALESS J033349.70-274234.6 G 03 33 49.6663 -27 42 34.067           ~ 6 0
91 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5445 6
92 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 759 0
93 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2739 4

    Equat.    Gal    SGal    Ecl

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