2012A&A...548A...4S

Query : 2012A&A...548A...4S

2012A&A...548A...4S - Astronomy and Astrophysics, volume 548A4-4 (2012/12-1)

Millimeter imaging of submillimeter galaxies in the COSMOS field: redshift distribution.

SMOLCIC V., ARAVENA M., NAVARRETE F., SCHINNERER E., RIECHERS D.A., BERTOLDI F., FERUGLIO C., FINOGUENOV A., SALVATO M., SARGENT M., McCRACKEN H.J., ALBRECHT M., KARIM A., CAPAK P., CARILLI C.L., CAPPELLUTI N., ELVIS M., ILBERT O., KARTALTEPE J., LILLY S., SANDERS D., SHETH K., SCOVILLE N.Z. and TANIGUCHI Y.

Abstract (from CDS):

We present new IRAM Plateau de Bure interferometer (PdBI) 1.3mm continuum observations at ∼1.5'' resolution of 28 submillimeter galaxies (SMGs), previously discovered with the 870 µm bolometer LABOCA at the APEX telescope from the central 0.7deg2 of the COSMOS field. Nineteen out of the 28 LABOCA sources were detected with PdBI at a >3σ level of ≃1.4mJy/beam. A combined analysis of this new sample with existing interferometrically identified SMGs in the COSMOS field yields the following results: i) >15%, and possibly up to ∼40% of single-dish detected SMGs consist of multiple sources; ii) statistical analysis of multi-wavelength counterparts to single-dish SMGs shows that only ∼50% have real radio or IR counterparts; iii) ∼18% of interferometric SMGs have either no multi-wavelength counterpart or only a radio-counterpart; and iv) ∼50-70% of z>3 SMGs have no radio counterparts (down to an rms of 7-12µJy at 1.4GHz). Using the exact interferometric positions to identify the multi-wavelength counterparts allows us to determine accurate photometric redshifts for these sources. The redshift distributions of the combined and the individual 1.1mm and 870µm selected samples shows a higher mean and a broader width than those derived in previous studies. This study finds that on average brighter and/or mm- selected SMGs are located at higher redshifts, consistent with previous studies. The mean redshift for the 1.1mm selected sample (z=3.1±0.4) is tentatively higher than that for the 870µm selected sample (z=2.6±0.4). Based on our nearly complete sample of AzTEC 1.1mm SMGs in a 0.15deg2 area, we infer a higher surface density of z>4 SMGs than predicted by current cosmological models. In summary, our findings imply that interferometric identifications at (sub-)millimeter wavelengths are crucial to build statistically complete and unbiased samples of SMGs.

Abstract Copyright: ∼

Journal keyword(s): surveys - galaxies: starburst - galaxies: fundamental parameters - galaxies: high-redshift - galaxies: statistics - submillimeter: galaxies

Nomenclature: Tables 1-6, A.1, B.1: COSMOSLABOCA NNW N=49 among (Nos 1-161).

Simbad objects: 105

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Number of rows : 105
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 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
2 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1
3 4C 39.25 Bla 09 27 03.01394144 +39 02 20.8518067   17.17 17.00 16.486   ~ 1036 1
4 COSMOS2015 616280 rG 09 58 37.965 +02 14 08.51   25.880 25.922     ~ 7 0
5 AS2COS 0012.1 smm 09 58 37.96632904630 +02 14 08.3726560282           ~ 4 0
6 COSMOSLABOCA 30 smm 09 58 47.70 +02 21 07.4           ~ 1 0
7 COSMOSLABOCA 25 smm 09 58 51.50 +02 15 53.7           ~ 1 0
8 COSMOSLABOCA 40 smm 09 59 25.909 +02 19 56.40           ~ 2 0
9 AzTEC J095930.76+024033.9 G 09 59 30.76 +02 40 33.9           ~ 9 0
10 AS2COS 0155.1 rG 09 59 31.700 +02 30 43.96           ~ 21 0
11 COSMOSLABOCA 158 smm 09 59 37.0 +02 33 20           ~ 1 0
12 AzTEC J095937.05+023320.0 G 09 59 37.05 +02 33 20.0           ~ 9 0
13 AS2COS 0023.1 rG 09 59 42.860 +02 29 38.20           ~ 74 0
14 AzTEC J095957.35+021133.2 G 09 59 56.9 +02 11 39           ~ 4 0
15 AS2COS 0006.1 rG 09 59 57.290 +02 27 30.54   27.5 26.8     ~ 26 0
16 COSMOSLABOCA 14 smm 09 59 57.40 +02 11 34.6           ~ 1 0
17 COSMOSLABOCA 73 smm 09 59 59.0 +02 34 40           ~ 2 0
18 COSMOS2015 842140 rG 09 59 59.330 +02 34 41.05           ~ 9 0
19 AS2COS 0028.1 G 09 59 59.33082066132 +02 34 40.9816630392           ~ 25 0
20 COSMOS2015 842595 rG 09 59 59.510 +02 34 41.60 25.99 25.52 24.83 24.65 24.35 ~ 26 0
21 AzTEC J095959.49+020633.1 rG 09 59 59.96 +02 06 33.1           ~ 11 0
22 AS2COS 0072.1 rG 10 00 06.490 +02 38 37.40           ~ 13 0
23 AS2COS 0075.1 smm 10 00 07.54052460498 +02 11 46.9613582533           ~ 4 0
24 AzTEC J100007.77+021151.6 G 10 00 07.8 +02 11 49           ~ 6 0
25 AS2COS 0001.1 G 10 00 08.03880890735 +02 26 12.2927690890           ~ 31 0
26 COSMOSVLADP J100008.02+022612.1 rG 10 00 08.040 +02 26 12.26           ~ 8 0
27 COSMOSLABOCA 10 smm 10 00 08.60 +02 13 09.7           ~ 1 0
28 ACS-GC 20123399 rG 10 00 08.76000 +02 19 01.9999         22.36 ~ 23 0
29 COSMOS 1656861 rG 10 00 08.9 +02 13 04           ~ 4 0
30 AzTEC 11 PaG 10 00 08.91 +02 40 10.2           ~ 16 0
31 COSMOSLABOCA 33 smm 10 00 09.580 +02 19 13.86           ~ 1 0
32 AzTEC 14.W G 10 00 09.63 +02 30 18.0           ~ 5 0
33 AzTEC 14.E G 10 00 10.03 +02 30 14.7           ~ 6 0
34 COSMOSLABOCA 23S G 10 00 10.070 +02 13 26.87           ~ 3 0
35 COSMOSLABOCA 23 smm 10 00 10.10 +02 13 33.3           ~ 1 0
36 COSMOSMAMBO MM J100010+021338 mm 10 00 10.1 +02 13 38           ~ 2 0
37 COSMOS2015 609289 rG 10 00 10.129 +02 13 34.98           ~ 10 0
38 AS2COS 0020.1 G 10 00 10.161 +02 13 34.95           ~ 5 0
39 COSMOSLABOCA 51 smm 10 00 11.50 +02 12 07.1           ~ 1 0
40 AS2COS 0032.1 rG 10 00 12.583 +02 14 43.95           ~ 17 0
41 AzTEC J100012.89+023435.7 rG 10 00 12.92 +02 34 34.8 27.58   27.55 26.70 26.87 ~ 20 0
42 COSMOSLABOCA 9N smm 10 00 13.750 +01 56 41.54           ~ 1 0
43 COSMOSLABOCA 9S smm 10 00 13.829 +01 56 38.64           ~ 2 0
44 COSMOSLABOCA 9 smm 10 00 14.20 +01 56 40.5           ~ 2 0
45 COSMOS J100015.29+021240.5 rG 10 00 15.282 +02 12 40.62           ~ 12 0
46 AS2COS 0002.1 G 10 00 15.61125019430 +02 15 49.0229273234           ~ 9 0
47 AzTEC J100015.77+021545.1 smm 10 00 15.7 +02 15 49           ~ 16 0
48 2MASS J10001605+0212375 Sy2 10 00 16.06 +02 12 37.5 21.611 20.836 19.714 19.357 18.758 ~ 49 0
49 COSMOSLABOCA 161 smm 10 00 16.150 +02 12 38.27           ~ 1 0
50 AS2COS 0037.1 rG 10 00 18.060 +02 48 30.43 25.99 25.49 24.86 24.70 24.22 ~ 16 0
51 COSMOS2015 646311 G 10 00 18.69 +02 16 52.2           ~ 10 0
52 AS2COS 0004.1 rG 10 00 19.750 +02 32 04.29     25.3     ~ 39 0
53 AS2COS 0059.1 rG 10 00 20.690 +02 35 20.37           ~ 116 0
54 AS2COS 0010.1 G 10 00 23.65 +02 21 55.3 23.52 22.48 21.87     ~ 20 0
55 COSMOSVLA3 J100023.65+022155.3 Rad 10 00 23.657 +02 21 55.30           ~ 5 0
56 AzTEC J100024.20+021748.7 rG 10 00 23.97 +02 17 50.0           ~ 20 0
57 CANDELS COSMOS F160W J100024.03+021749.6 G 10 00 24.03 +02 17 49.7   23.067 21.897   20.223 ~ 31 0
58 COSMOSLABOCA 48 smm 10 00 24.70 +02 17 42.3           ~ 1 0
59 COSMOS2015 627356 rG 10 00 25.54 +02 15 05.7 27.31 22.49 26.25 26.08 25.51 ~ 18 0
60 [CCC2013] SMM J100025.1+021508 smm 10 00 25.550 +02 15 08.44           ~ 5 0
61 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
62 COSMOSLABOCA 12 smm 10 00 30.20 +02 41 37.6           ~ 4 0
63 [RSN2016] COSMOS-1885 rG 10 00 31.82006 +02 12 43.4948           ~ 7 0
64 CANDELS COSMOS F160W J100031.84+021242.6 rG 10 00 31.84570 +02 12 42.7122           ~ 18 0
65 AzTEC J100031.47+021239.0 rG 10 00 31.9 +02 12 41           ~ 4 0
66 AS2COS 0007.1 rG 10 00 33.36182 +02 26 01.4980           ~ 18 0
67 AS2COS 0013.1 rG 10 00 35.300 +02 43 53.27   26.3 25.4     ~ 21 0
68 AS2COS 0053.1 G 10 00 43.1770000 +02 05 19.040280           ~ 7 0
69 COSMOSVLA J100043.20+020519.2 Rad 10 00 43.209 +02 05 19.26           ~ 4 0
70 COSMOSMAMBO MM J100047+021018 mm 10 00 47.3 +02 10 18           ~ 4 0
71 COSMOSLABOCA 16 smm 10 00 51.40 +02 33 35.7           ~ 1 0
72 COSMOSLABOCA 16S smm 10 00 51.554 +02 33 32.09           ~ 1 0
73 COSMOS2015 831167 rG 10 00 51.584 +02 33 34.36 25.44 24.71 23.96 23.74 23.34 ~ 18 0
74 COSMOSLABOCA 16N G 10 00 51.585 +02 33 33.56           ~ 2 0
75 COSMOSLABOCA 16E G 10 00 51.780 +02 33 33.58           ~ 1 0
76 COSMOSLABOCA 2 smm 10 00 56.0 +02 20 17           ~ 2 0
77 AS2COS 0003.1 rG 10 00 56.946 +02 20 17.35           ~ 20 0
78 AzTEC J100057.20+022008.7 rG 10 00 57.2 +02 20 13           ~ 15 0
79 AS2COS 0003.3 rG 10 00 57.272 +02 20 12.65           ~ 16 0
80 COSMOSVLADP J100057.35+022002.0 rG 10 00 57.3552 +02 20 02.150           ~ 4 0
81 COSMOS 1561626 G 10 00 59.247 +02 17 19.05           ~ 2 0
82 COSMOSMAMBO MM J100059+021716 mm 10 00 59.4 +02 17 16           ~ 3 0
83 COSMOSLABOCA 5 smm 10 00 59.521 +02 17 02.54           ~ 2 0
84 COSMOSVLA J100059.78+021653.9 Rad 10 00 59.788 +02 16 53.91           ~ 3 0
85 COSMOSLABOCA 11 smm 10 01 14.10 +01 48 12.4           ~ 1 0
86 COSMOSLABOCA 11S G 10 01 14.200 +01 48 10.31           ~ 1 0
87 COSMOSLABOCA 11N G 10 01 14.260 +01 48 18.86           ~ 1 0
88 COSMOSLABOCA 6 smm 10 01 23.50 +02 26 11.1           ~ 1 0
89 COSMOSVLA3 J100123.53+022617.9 Rad 10 01 23.529 +02 26 18.16           ~ 5 0
90 COSMOSLABOCA 6S G 10 01 23.570 +02 26 03.62           ~ 2 0
91 COSMOSLABOCA 6N smm 10 01 23.640 +02 26 08.42           ~ 2 0
92 COSMOSLABOCA 17 smm 10 01 36.40 +02 11 02.9           ~ 2 0
93 COSMOSLABOCA 17S G 10 01 36.772 +02 11 04.87           ~ 2 0
94 COSMOSVLA J100136.80+021109.9 Rad 10 01 36.801 +02 11 09.95           ~ 2 0
95 AS2COS 0098.1 G 10 01 36.811 +02 11 09.66 26.71 26.16 25.23 24.93 24.60 ~ 8 0
96 COSMOSVLADP J100137.96+022339.1 Rad 10 01 37.9690 +02 23 39.140           ~ 2 0
97 COSMOSLABOCA 128 smm 10 01 37.990 +02 23 26.50           ~ 2 0
98 AS2COS 0011.1 G 10 01 41.75616752991 +02 27 12.8979278618           ~ 9 0
99 COSMOSVLA J100141.77+022713.0 rG 10 01 41.774 +02 27 13.04           ~ 4 0
100 COSMOSLABOCA 62 smm 10 01 53.20 +02 20 09.5           ~ 1 0
101 QSO J1008+0621 BLL 10 08 00.81616040 +06 21 21.2160257 17.61 17.17 17.85 16.73   ~ 123 1
102 4C 01.28 BLL 10 58 29.60520810 +01 33 58.8237454   18.74 18.28 16.68   ~ 828 2
103 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1
104 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
105 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 837 0

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