2016ApJ...822...36O


Query : 2016ApJ...822...36O

2016ApJ...822...36O - Astrophys. J., 822, 36-36 (2016/May-1)

ALMACAL I: first dual-band number counts from a deep and wide ALMA submillimeter survey, free from cosmic variance.

OTEO I., ZWAAN M.A., IVISON R.J., SMAIL I. and BIGGS A.D.

Abstract (from CDS):

We have exploited ALMA calibration observations to carry out a novel, wide, and deep submillimeter (submm) survey, almacal. These calibration data comprise a large number of observations of calibrator fields in a variety of frequency bands and array configurations. By gathering together data acquired during multiple visits to many ALMA calibrators, it is possible to reach noise levels which allow the detection of faint, dusty, star-forming galaxies (DSFGs) over a significant area. In this paper, we outline our survey strategy and report the first results. We have analyzed data for 69 calibrators, reaching depths of ∼25 µJy beam-1 at sub-arcsec resolution. Adopting a conservative approach based on >=5σ detections, we have found 8 and 11 DSFGs in ALMA bands 6 and 7, respectively, with flux densities S 1.2 mm >= 0.2 mJy. The faintest galaxies would have been missed by even the deepest Herschel surveys. Our cumulative number counts have been determined independently at 870 µm and 1.2 mm from a sparse sampling of the astronomical sky, and are thus relatively free of cosmic variance. The counts are lower than reported previously by a factor of at least 2x. Future analyses will yield large, secure samples of DSFGs with redshifts determined via the detection of submm spectral lines. Uniquely, our strategy then allows for morphological studies of very faint DSFGs-representative of more normal star-forming galaxies than conventional submm galaxies-in fields where self-calibration is feasible, yielding milliarcsecond spatial resolution.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

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

Nomenclature: Table 2+Text: ALMACAL JHHMMSS.ss+DDMMSS.s N=13+1.

Simbad objects: 81

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Number of rows : 81
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 QSO B0008-264 BLL 00 11 01.24673846 -26 12 33.3770171   19.53   19.64   ~ 73 0
2 QSO B0035-252 QSO 00 38 14.7354970 -24 59 02.235519   18.90   17.14   ~ 101 1
3 ALMACAL J010838.56+013504.2 G 01 08 38.56 +01 35 04.2           ~ 1 0
4 ALMACAL J010838.75+013455.9 G 01 08 38.75 +01 34 55.9           ~ 1 0
5 4C 01.02 QSO 01 08 38.771109 +01 35 00.31727   18.54 18.39 19.05   ~ 483 1
6 QSO B0119+115 QSO 01 21 41.59504339 +11 49 50.4131012   19.5 19.0 18.61   ~ 170 1
7 QSO B0130-17 QSO 01 32 43.48746261 -16 54 48.5218416   18.75 18.44 15.44   ~ 195 1
8 QSO B0138-097 BLL 01 41 25.83215547 -09 28 43.6741894   16.94 16.55 17.21   ~ 251 3
9 QSO B0142-278 QSO 01 45 03.3948353273 -27 33 34.329198106   19.0 19.0 17.43   ~ 101 1
10 4C -02.09 QSO 02 15 42.0172866 -02 22 56.752638   21.8 21.8 19.71   ~ 65 1
11 QSO J0217+0144 QSO 02 17 48.9547510 +01 44 49.698899   16.74 16.09 18.51 13.29 ~ 387 1
12 4C 06.11 QSO 02 24 28.42819659 +06 59 23.3415393   20.8 20.0 17.78   ~ 151 1
13 QSO B0235+1624 BLL 02 38 38.93010 +16 36 59.2746   16.46 15.50 15.92   ~ 1435 2
14 QSO B0237-027 QSO 02 39 45.47226775 -02 34 40.9144020   19.5 21 19.04   ~ 114 1
15 NGC 1052 GiP 02 41 04.79851 -08 15 20.7517 11.84 11.41 10.47 10.71   ~ 1194 2
16 ALMACAL J024104.82-081515.0 G 02 41 04.82 -08 15 15.0           ~ 1 0
17 QSO B0327-241 QSO 03 29 54.0755608 -23 57 08.773764   19.68 18.1 19.31   ~ 73 1
18 QSO B0332-403 BLL 03 34 13.6547438706 -40 08 25.401996186 18.54 18.35 17.87 17.5   ~ 285 1
19 QSO B0336-0156 QSO 03 39 30.93778751 -01 46 35.8041062   18.96 18.41 17.33   ~ 520 1
20 QSO B0346-279 QSO 03 48 38.14457723 -27 49 13.5655526   20.08 18.63 17.72   ~ 160 1
21 QSO B0420-0127 QSO 04 23 15.80072776 -01 20 33.0654034   17.50 17.00 16.28   ~ 1102 3
22 QSO B0507+179 QSO 05 10 02.36912982 +18 00 41.5816534   20.0 19.0 19.09   ~ 355 1
23 NAME Pic A Sy1 05 19 49.7230919028 -45 46 43.855209977   15.73 15.77 14.85   ~ 581 1
24 QSO B0521-365 BLL 05 22 57.9839686440 -36 27 30.847737786   15.26 14.62 14.48   ~ 752 2
25 QSO B0537-441 BLL 05 38 50.36155219 -44 05 08.9389165   15.77 16.48 16   ~ 815 2
26 QSO B0549-575 QSO 05 50 09.58018296 -57 32 24.3965304   20.26 19.5 18.81   ~ 46 1
27 QSO B0605-0834 BLL 06 07 59.69923743 -08 34 49.9781718     18.5 17.70   ~ 414 1
28 QSO J0635-7516 QSO 06 35 46.5080299 -75 16 16.815501   15.96 15.75 15.82   ~ 528 1
29 QSO B0823+033 BLL 08 25 50.33835429 +03 09 24.5200730   17.81 17.23 16.91   ~ 304 1
30 QSO J0854+2006 BLL 08 54 48.8749311881 +20 06 30.642936668   15.91 15.43 15.56   ~ 2107 1
31 4C 01.24B QSO 09 09 10.0921832543 +01 21 35.611559836   17.63 17.29 17.04   ~ 385 2
32 QSO J1008+0621 BLL 10 08 00.8161585 +06 21 21.216137 17.61 17.17 17.85 16.73   ~ 92 1
33 ALMACAL J101051.03-020018.8 G 10 10 51.03 -02 00 18.8           ~ 1 0
34 4C -01.21 QSO 10 10 51.6667066 -02 00 19.574829   18.99 18.63 19.1   ~ 74 1
35 QSO B1034-293 QSO 10 37 16.07973476 -29 34 02.8133345   16.46 16.46 17.54   ~ 290 1
36 ICRF J104806.6-190935 Sy1 10 48 06.62060701 -19 09 35.7266240   18.59 18.5 17.10   ~ 163 1
37 ALMACAL J105829.54+013359.7 G 10 58 29.50 +01 33 59.7           ~ 2 0
38 4C 01.28 BLL 10 58 29.60520747 +01 33 58.8237691   18.74 18.28 16.68   ~ 691 2
39 ALMACAL J105829.73+013357.2 G 10 58 29.70 +01 33 57.2           ~ 2 0
40 ICRF J121503.9+165437 QSO 12 15 03.97914173 +16 54 37.9570703   20.5 20.0 18.94   ~ 66 1
41 QSO B1213-172 QSO 12 15 46.75176110 -17 31 45.4029502     21.4 17.50   ~ 131 1
42 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5467 1
43 ALMACAL J130349.05-554034.2 G 13 03 49.05 -55 40 34.2           ~ 1 0
44 3FGL J1304.3-5535 Bla 13 03 49.2168316958 -55 40 31.604603883           ~ 23 0
45 ALMACAL J130349.43-554028.5 G 13 03 49.43 -55 40 28.5           ~ 1 0
46 2FGL J1307.6-6704 Bla 13 08 17.3747 -67 07 05.227           ~ 28 0
47 QSO B1334-127 QSO 13 37 39.78277768 -12 57 24.6932620   18.5 18.5 16.22   ~ 447 1
48 QSO B1339-287 QSO 13 42 15.34561635 -29 00 41.8315406     19.5 19.2   ~ 34 1
49 ICRF J134733.3+121724 Sy2 13 47 33.36161542 +12 17 24.2402572   19.28 18.44 15.718   ~ 542 3
50 QSO B1424-41 QSO 14 27 56.29756536 -42 06 19.4375991   18.48 17.7 16.30   ~ 402 1
51 ICRF J150506.4+032630 Sy1 15 05 06.47715917 +03 26 30.8126616   19.02 18.62 17.72   ~ 214 1
52 QSO B1514-24 BLL 15 17 41.8135246339 -24 22 19.482167214   15.13 14.00 13.95   ~ 684 3
53 ICRF J153454.6-352623 QSO 15 34 54.6875856 -35 26 23.497396   20.25   18.72   ~ 32 1
54 4C 05.64 QSO 15 50 35.26924162 +05 27 10.4484262   19.10 18.73 19.02   ~ 295 1
55 3FGL J1617.4-5846 AGN 16 17 17.8913859288 -58 48 07.860059063   18.23       ~ 107 1
56 QSO B1622-253 QSO 16 25 46.89164010 -25 27 38.3267989   21.3 20.6 19.60   ~ 319 1
57 QSO J1700-2610 QSO 17 00 53.15406129 -26 10 51.7253457   16.50       ~ 95 1
58 QSO B1730-130 QSO 17 33 02.70578476 -13 04 49.5481484   18 18.5 18.78 17.39 ~ 1028 1
59 ALMACAL J174422.69-311639.4 G 17 44 22.69 -31 16 39.4           ~ 1 0
60 QSO J1744-3116 Bla 17 44 23.57824 -31 16 36.2943           ~ 130 1
61 ICRF J182620.5-292424 BLL 18 26 20.5990930 -29 24 24.952262           ~ 20 1
62 QSO J1832-2039 BLL 18 32 11.0447839878 -20 39 48.202176867   18.56 20.2     ~ 48 1
63 ICRF J183220.8-103511 G 18 32 20.83647 -10 35 11.1968           ~ 75 1
64 QSO B1921-293 BLL 19 24 51.05595514 -29 14 30.1210524   18.71 18.21 15.07   ~ 738 0
65 ALMACAL J193329.46-694258.4 G 19 33 29.46 -69 42 58.4           ~ 1 0
66 QSO B1928-698 QSO 19 33 31.1612986078 -69 42 58.906655324   19.2       ~ 20 1
67 ICRF J195511.5+135816 Bla 19 55 11.5719630415 +13 58 16.233163086       18.6   ~ 40 1
68 QSO B2005-489 BLL 20 09 25.3910622923 -48 49 53.722146927   15.75 12.81 11.41   ~ 530 2
69 QSO B2052-474 QSO 20 56 16.35981874 -47 14 47.6276461   18.29 19.1 18.07   ~ 279 1
70 4C 06.69 QSO 21 48 05.4585565234 +06 57 38.605396596   16.85 16.47 15.06   ~ 616 1
71 ALMACAL J214806.00+065736.2 G 21 48 06.00 +06 57 36.2           ~ 1 0
72 ALMACAL J220642.87-003108.1 G 22 06 42.87 -00 31 08.1           ~ 1 0
73 ALMACAL J220642.98-003110.8 G 22 06 42.98 -00 31 10.8           ~ 1 0
74 2MASS J22064328-0031026 BLL 22 06 43.2832967809 -00 31 02.508794313   20.26   18.69   ~ 46 0
75 2QZ J222321.6-313702 Bz? 22 23 21.6327980897 -31 37 02.120617851     20.0 19.49   ~ 10 1
76 ALMACAL J222321.73-313707.7 G 22 23 21.73 -31 37 07.7           ~ 1 0
77 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 1017 2
78 ICRF J225805.9-275821 Sy1 22 58 05.96288481 -27 58 21.2567425   17.34 16.77 17.20   ~ 311 1
79 4C -05.95 QSO 23 06 15.3171165 -04 59 48.284966   18.5 19.5 18.5   ~ 53 1
80 QSO B2329-16 BLL 23 31 38.65244503 -15 56 57.0096852   20.72   20.65   ~ 120 1
81 QSO B2355-534 BLL 23 57 53.2659039839 -53 11 13.691995248   18.63 17.8 16.89   ~ 141 1

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2021.09.26-05:26:22

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