2016MNRAS.463...10M

Query : 2016MNRAS.463...10M

2016MNRAS.463...10M - Mon. Not. R. Astron. Soc., 463, 10-23 (2016/November-3)

SEDEBLEND: a new method for deblending spectral energy distributions in confused imaging.

MacKENZIE T.P., SCOTT D. and SWINBANK M.

Abstract (from CDS):

For high-redshift submillimetre or millimetre sources detected with single-dish telescopes, interferometric follow-up has shown that many are multiple submillimetre galaxies blended together. Confusion-limited Herschel\nobservations of such targets are also available, and these sample the peak of their spectral energy distribution (SED) in the far-infrared. Many methods for analysing these data have been adopted, but most follow the traditional approach of extracting fluxes before model SEDs are fit, which has the potential to erase important information on degeneracies among fitting parameters and glosses over the intricacies of confusion noise. Here, we adapt the forward-modelling method that we originally developed to disentangle a high-redshift strongly lensed galaxy group, in order to tackle this general problem in a more statistically rigorous way, by combining source deblending and SED fitting into the same procedure. We call this method 'SEDeblend'. As an application, we derive constraints on far-infrared luminosities and dust temperatures for sources within the ALMA follow-up of the LABOCA Extended Chandra Deep Field South Submillimetre Survey. We find an average dust temperature for an 870-µm-selected sample of (33.9 ± 2.4) K for the full survey. When selection effects of the sample are considered, we find no evidence that the average dust temperature evolves with redshift for sources with redshifts greater than about 1.5, when compared to those with redshifts between 0.1 and 1.5.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - galaxies: star formation - submillimetre: galaxies - submillimetre: galaxies

Simbad objects: 97

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Number of rows : 97
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ALESS J033110.07-275236.7 G 03 31 10.07 -27 52 36.7           ~ 13 0
2 ALESS J033110.30-275240.8 G 03 31 10.30 -27 52 40.8           ~ 7 0
3 ALESS J033121.92-274941.4 G 03 31 21.92 -27 49 41.4           ~ 12 0
4 ALESS J033122.66-275417.2 G 03 31 22.66 -27 54 17.2           ~ 13 0
5 ALESS J033122.96-275414.4 G 03 31 22.96 -27 54 14.4           ~ 9 0
6 ALESS J033124.47-275038.1 rG 03 31 24.47 -27 50 38.1 26.26 25.30 25.22 24.59 24.07 ~ 12 0
7 ALESS J033124.72-275047.1 rG 03 31 24.72 -27 50 47.1   24.85 24.56 24.37 24.13 ~ 20 0
8 ALESS J033126.57-275555.7 G 03 31 26.57 -27 55 55.7           ~ 9 0
9 ALESS J033127.19-275551.3 rG 03 31 27.19 -27 55 51.3 25.14 23.86 23.60 23.42 23.38 ~ 21 0
10 ALESS J033128.91-275909.0 G 03 31 28.91 -27 59 09.0           ~ 18 0
11 ALESS J033129.92-275722.7 rG 03 31 29.90 -27 57 22.7       26.11 24.61 ~ 28 0
12 ALESS J033130.50-275149.1 G 03 31 30.50 -27 51 49.1           ~ 9 0
13 ALESS J033130.72-275155.7 G 03 31 30.72 -27 51 55.7           ~ 9 0
14 ALESS J033133.78-275932.4 G 03 31 33.78 -27 59 32.4           ~ 9 0
15 ALESS J033133.97-275938.3 G 03 31 33.97 -27 59 38.3           ~ 8 0
16 ALESS J033134.13-275928.9 G 03 31 34.13 -27 59 28.9           ~ 8 0
17 ALESS J033138.14-274343.4 G 03 31 38.14 -27 43 43.4           ~ 11 0
18 ALESS J033139.54-274119.7 rG 03 31 39.55 -27 41 19.7 24.83 23.77 23.44 23.28 22.94 ~ 40 0
19 ALESS J033142.62-274841.0 G 03 31 42.62 -27 48 41.0           ~ 9 0
20 ALESS J033142.80-274836.9 G 03 31 42.80 -27 48 36.9           ~ 11 0
21 ALESS J033144.02-273835.5 rG 03 31 44.03 -27 38 35.8 25.19 23.87 23.78 23.41 23.61 ~ 29 0
22 ALESS J033145.03-273436.7 rG 03 31 45.0493 -27 34 37.060 25.44 25.17 24.77 24.15 23.91 ~ 16 0
23 ALESS J033145.06-274427.3 G 03 31 45.06 -27 44 27.3           ~ 12 0
24 ALESS J033146.92-273239.3 rG 03 31 46.9496 -27 32 39.547     26.20 25.60   ~ 18 0
25 ALESS J033149.79-275740.8 G 03 31 49.7741 -27 57 40.439           ~ 14 0
26 ALESS J033150.49-274445.3 G 03 31 50.49 -27 44 45.3           ~ 8 0
27 ALESS J033151.11-274437.3 rG 03 31 51.11 -27 44 37.6 25.31 24.52 24.21 23.66 22.7896 ~ 46 0
28 [LBX2017] 42 Sy2 03 31 51.94 -27 53 27.2 26.57 25.14 25.38 24.74   ~ 62 0
29 ALESS J033152.49-280319.1 rG 03 31 52.4870 -28 03 18.934     26.71     ~ 21 0
30 ALESS J033153.85-275104.3 G 03 31 53.85 -27 51 04.3           ~ 9 0
31 ALESS J033154.32-274528.9 G 03 31 54.32 -27 45 28.9           ~ 10 0
32 ALESS J033154.44-274531.4 rG 03 31 54.44 -27 45 31.4           ~ 15 0
33 ALESS J033154.50-275105.6 rG 03 31 54.50 -27 51 05.6 26.42 25.10 25.03 24.48 24.22 ~ 36 0
34 ALESS J033154.76-275341.5 rG 03 31 54.76 -27 53 41.5           ~ 19 0
35 ALESS J033154.95-275337.6 G 03 31 54.95 -27 53 37.6           ~ 8 0
36 ALESS J033155.39-275340.3 G 03 31 55.39 -27 53 40.3           ~ 9 0
37 ALESS J033155.81-275347.2 rG 03 31 55.81 -27 53 47.2           ~ 15 0
38 ALESS J033156.88-275939.3 rG 03 31 56.8845 -27 59 39.653 26.78 26.02 25.46 25.04 24.45 ~ 13 0
39 ALESS J033203.89-273600.1 G 03 32 03.89 -27 36 00.1           ~ 6 0
40 ALESS J033204.04-273606.4 G 03 32 04.04 -27 36 06.4           ~ 9 0
41 ALESS J033205.12-274652.1 rG 03 32 04.889 -27 46 47.70 26.11 25.041 25.34 26.10 23.974 ~ 51 0
42 ALESS J033207.30-275120.8 rG 03 32 07.32211 -27 51 20.3749   24.117   23.98 23.209 ~ 42 0
43 ALESS J033207.89-275824.1 G 03 32 07.89 -27 58 24.1           ~ 11 0
44 ALESS J033208.26-275814.2 G 03 32 08.26 -27 58 14.2 27.01 27.04 26.39 26.79   ~ 17 0
45 ALESS J033209.61-274107.7 G 03 32 09.6084 -27 41 06.983 26.87 26.32 26.61 25.87   ~ 14 0
46 ALESS J033211.34-275211.9 rG 03 32 11.33 -27 52 12.0           ~ 35 0
47 ALESS J033211.92-280514.0 G 03 32 11.92 -28 05 14.0           ~ 7 0
48 ALESS J033212.01-280506.5 G 03 32 12.01 -28 05 06.5           ~ 12 0
49 ALESS J033213.85-275600.3 rG 03 32 13.846 -27 56 00.09 27.86 28.22 27.73 25.6 25.90 ~ 57 0
50 ALESS J033219.02-275219.4 AG? 03 32 19.06 -27 52 14.8           ~ 27 0
51 ALESS J033221.14-275627.0 G 03 32 21.14 -27 56 27.0           ~ 16 0
52 ALESS J033221.18-275630.5 G 03 32 21.18 -27 56 30.5           ~ 8 0
53 ALESS J033221.60-275624.0 G 03 32 21.60 -27 56 24.0 26.37 22.010 24.84 24.261 23.61 ~ 23 0
54 [LBX2017] 453 AGN 03 32 25.25 -27 52 30.7   27.15 27.00 27.01 26.581 ~ 44 0
55 ALESS J033229.29-275619.7 Sy1 03 32 29.2912 -27 56 19.465     26.76 25.82 25.1655 ~ 122 0
56 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 862 0
57 ALESS J033233.33-273913.6 G 03 32 33.33 -27 39 13.6           ~ 12 0
58 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
59 ALESS J033240.40-273758.1 EmG 03 32 40.048 -27 38 08.64 25.56 24.3636 24.03 23.327 21.91 ~ 29 0
60 ALESS J033243.02-275514.7 G 03 32 43.02 -27 55 14.7           ~ 10 0
61 ALESS J033243.20-275514.3 rG 03 32 43.1879 -27 55 14.295 26.14 24.85 24.52 24.42 24.2641 ~ 72 0
62 [HKS2013] ALESS 061.1 G 03 32 45.87 -28 00 23.4           ~ 24 0
63 ALESS J033248.86-273113.3 G 03 32 48.8558 -27 31 12.868 26.98         ~ 21 0
64 ALESS J033248.99-274251.8 G 03 32 48.99 -27 42 51.8           ~ 15 0
65 ALESS J033250.88-273141.5 rG 03 32 50.88 -27 31 41.5 25.52         ~ 10 0
66 ALESS J033251.27-273150.7 G 03 32 51.27 -27 31 50.7           ~ 8 0
67 ALESS J033251.82-275533.6 G 03 32 51.82 -27 55 33.6           ~ 10 0
68 [HKS2013] ALESS 065.1 G 03 32 52.27 -27 35 26.3           ~ 26 0
69 ALESS J033254.00-273814.9 G 03 32 54.00 -27 38 14.9           ~ 13 0
70 ALESS J033256.64-280325.2 G 03 32 56.64 -28 03 25.2           ~ 11 0
71 ALESS J033256.96-280100.7 rG 03 32 56.9734 -28 01 01.204 26.57 25.95 24.94 24.00 22.91 ~ 20 0
72 ALESS J033302.16-274041.3 G 03 33 02.16 -27 40 41.3           ~ 8 0
73 ALESS J033302.22-274035.4 G 03 33 02.22 -27 40 35.4   24.277   24.239   ~ 15 0
74 ALESS J033302.35-274035.4 G 03 33 02.35 -27 40 35.4           ~ 8 0
75 ALESS J033302.69-275642.8 G 03 33 02.69 -27 56 42.8 25.67 24.78 24.65 24.39 24.08 ~ 26 0
76 ALESS J033303.07-275642.9 G 03 33 03.07 -27 56 42.9           ~ 8 0
77 ALESS J033303.82-274418.2 G 03 33 03.82 -27 44 18.2 27.66 26.89 26.67   24.36 ~ 13 0
78 ALESS J033305.65-273328.2 rG 03 33 05.65 -27 33 28.2       24.00   ~ 21 0
79 ALESS J033306.14-273323.1 G 03 33 06.14 -27 33 23.1           ~ 8 0
80 ALESS J033306.64-274802.4 G 03 33 06.6365 -27 48 01.919 28.17         ~ 13 0
81 ALESS J033307.59-275805.8 G 03 33 07.5902 -27 58 05.840           ~ 11 0
82 LESS J033308.5-280044 G 03 33 08.49 -28 00 42.8 25.39 25.05 24.69 24.25 23.28 ~ 13 0
83 ALESS J033309.15-274817.2 rG 03 33 09.3454 -27 48 15.998           ~ 16 0
84 ALESS J033314.18-275612.3 G 03 33 14.18 -27 56 12.3           ~ 10 0
85 ALESS J033314.41-275611.6 G 03 33 14.41 -27 56 11.6 28.44         ~ 20 0
86 ALESS J033314.46-275614.5 G 03 33 14.46 -27 56 14.5           ~ 14 0
87 ALESS J033315.42-274524.3 rG 03 33 15.4267 -27 45 24.430 26.46 24.90 24.08 23.37 22.22 ~ 16 0
88 [HKS2013] ALESS 003.1 G 03 33 21.5113 -27 55 20.515           ~ 23 0
89 LESS J033325.4-273400 G 03 33 25.3661 -27 33 58.314           ~ 11 0
90 ALESS J033331.93-275409.5 rG 03 33 31.97 -27 54 10.3 21.03 21.18 21.13 20.79 20.64 ~ 37 0
91 ALESS J033332.34-275955.6 rG 03 33 32.3411 -27 59 54.831           ~ 17 0
92 ALESS J033333.37-275929.6 G 03 33 33.37 -27 59 29.6           ~ 17 0
93 ALESS J033333.59-275935.4 G 03 33 33.59 -27 59 35.4           ~ 9 0
94 ALESS J033335.60-274023.0 G 03 33 35.5719 -27 40 22.963   26.93 26.24 25.98 24.97 ~ 13 0
95 ALESS J033336.14-275350.6 G 03 33 36.14 -27 53 50.6           ~ 8 0
96 ALESS J033336.36-275348.3 G 03 33 36.36 -27 53 48.3           ~ 10 0
97 ALESS J033336.90-275809.3 rG 03 33 36.8866 -27 58 09.382           ~ 17 0

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