2012ApJ...748..125P

Query : 2012ApJ...748..125P

2012ApJ...748..125P - Astrophys. J., 748, 125 (2012/April-1)

A successful broadband survey for giant Lyα nebulae. I. Survey design and candidate selection.

PRESCOTT M.K.M., DEY A. and JANNUZI B.T.

Abstract (from CDS):

Giant Lyα nebulae (or Lyα "blobs") are likely sites of ongoing massive galaxy formation, but the rarity of these powerful sources has made it difficult to form a coherent picture of their properties, ionization mechanisms, and space density. Systematic narrowband Lyα nebula surveys are ongoing, but the small redshift range covered and the observational expense limit the comoving volume that can be probed by even the largest of these surveys and pose a significant problem when searching for such rare sources. We have developed a systematic search technique designed to find large Lyα nebulae at 2 ≲ z ≲ 3 within deep broadband imaging and have carried out a survey of the 9.4 deg2 NOAO Deep Wide-Field Survey Boötes field. With a total survey comoving volume of ~108 h –370Mpc3, this is the largest volume survey for Lyα nebulae ever undertaken. In this first paper in the series, we present the details of the survey design and a systematically selected sample of 79 candidates, which includes one previously discovered Lyα nebula.

Abstract Copyright: ∼

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

Simbad objects: 91

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Number of rows : 91
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 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
2 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0
3 NAME Chandra Deep Field-North reg 12 36.8 +62 13           ~ 686 0
4 NAME Subaru Deep Field NGP reg 13 24 21.3 +27 29 23           ~ 330 1
5 NDWFS J142441.9+332532 EmO 14 24 41.940 +33 25 31.94   23.52   23.14   ~ 1 0
6 NDWFS J142443.9+344834 EmO 14 24 43.869 +34 48 34.45   23.64   23.27   ~ 1 0
7 NDWFS J142446.0+354714 EmO 14 24 45.998 +35 47 14.06   23.68   23.49   ~ 1 0
8 NDWFS J142449.8+324743 EmO 14 24 49.761 +32 47 42.61   24.09   24.83   ~ 2 0
9 NDWFS J142516.6+324335 EmO 14 25 16.629 +32 43 35.47   23.13   22.99   ~ 2 0
10 NDWFS J142522.3+325424 EmO 14 25 22.339 +32 54 23.65   23.40   22.92   ~ 1 0
11 NDWFS J142526.3+335112 EmO 14 25 26.332 +33 51 12.16   23.35   22.95   ~ 2 0
12 NDWFS J142533.0+343912 EmO 14 25 32.966 +34 39 11.95   23.67   23.41   ~ 2 0
13 NDWFS J142535.2+324934 EmO 14 25 35.205 +32 49 34.17   23.54   23.05   ~ 1 0
14 NDWFS J142539.9+344959 EmO 14 25 39.859 +34 49 59.19   23.57   23.43   ~ 2 0
15 NDWFS J142547.1+334454 EmO 14 25 47.126 +33 44 54.13   22.98   22.53   ~ 2 0
16 NDWFS J142548.3+322957 EmO 14 25 48.283 +32 29 56.58   23.83   23.71   ~ 2 0
17 NDWFS J142600.8+350252 EmO 14 26 00.842 +35 02 52.36   23.87   23.24   ~ 2 0
18 NDWFS J142614.7+344434 EmO 14 26 14.714 +34 44 34.22   23.51   23.08   ~ 2 0
19 NDWFS J142620.0+340427 EmO 14 26 19.982 +34 04 27.01   23.51   24.26   ~ 2 0
20 NDWFS J142622.9+351422 EmO 14 26 22.905 +35 14 22.02   23.20   23.69   ~ 4 0
21 NDWFS J142634.1+334954 EmO 14 26 34.106 +33 49 53.61   23.54   23.03   ~ 1 0
22 NDWFS J142643.9+340937 EmO 14 26 43.850 +34 09 36.82   23.40   23.37   ~ 2 0
23 NDWFS J142653.2+343855 EmO 14 26 53.172 +34 38 55.39   23.53   24.2   ~ 3 0
24 NDWFS J142707.8+344749 EmO 14 27 07.840 +34 47 48.84   23.51   23.08   ~ 1 0
25 NDWFS J142710.4+324842 EmO 14 27 10.447 +32 48 41.76   23.09   22.68   ~ 1 0
26 NDWFS J142714.8+343155 EmO 14 27 14.791 +34 31 54.55   23.38   22.86   ~ 2 0
27 NDWFS J142722.4+345225 EmO 14 27 22.408 +34 52 24.74   23.71   23.42   ~ 2 0
28 NDWFS J142729.9+341125 EmO 14 27 29.894 +34 11 25.22   23.48   23   ~ 1 0
29 NDWFS J142732.5+341213 EmO 14 27 32.520 +34 12 13.39   23.62   24.24   ~ 1 0
30 NDWFS J142735.5+342332 EmO 14 27 35.479 +34 23 32.38   23.55   23.81   ~ 1 0
31 NDWFS J142745.2+352949 EmO 14 27 45.194 +35 29 48.98   23.48   23.25   ~ 1 0
32 NDWFS J142746.3+344544 EmO 14 27 46.348 +34 45 44.02   23.39   23.05   ~ 1 0
33 NDWFS J142753.8+341204 EmO 14 27 53.762 +34 12 04.10   23.29   22.84   ~ 2 0
34 NDWFS J142758.6+354428 EmO 14 27 58.617 +35 44 28.42   23.42   22.92   ~ 1 0
35 NDWFS J142802.8+350933 EmO 14 28 02.803 +35 09 33.30   23.80   23.45   ~ 1 0
36 NDWFS J142819.7+325449 EmO 14 28 19.735 +32 54 48.70   23.44   23   ~ 1 0
37 NDWFS J142819.8+344657 EmO 14 28 19.840 +34 46 57.14   23.16   22.55   ~ 1 0
38 NDWFS J142821.3+352001 EmO 14 28 21.259 +35 20 00.92   23.42   23.17   ~ 1 0
39 NDWFS J142826.0+352116 EmO 14 28 25.999 +35 21 15.62   23.58   23.1   ~ 1 0
40 NDWFS J142832.7+354105 EmO 14 28 32.733 +35 41 04.56   23.72   23.95   ~ 1 0
41 NDWFS J142846.2+330819 EmO 14 28 46.228 +33 08 19.42   23.00   22.11   ~ 2 0
42 NDWFS J142855.0+353022 EmO 14 28 54.998 +35 30 21.70   23.26   22.74   ~ 2 0
43 NDWFS J142856.0+331937 EmO 14 28 56.013 +33 19 36.51   23.38   22.78   ~ 1 0
44 NDWFS J142906.3+341130 EmO 14 29 06.271 +34 11 30.26   23.47   22.99   ~ 1 0
45 NDWFS J142906.4+352432 EmO 14 29 06.398 +35 24 32.22   23.50   22.96   ~ 1 0
46 NDWFS J142909.3+342542 EmO 14 29 09.278 +34 25 42.38   23.41   22.83   ~ 1 0
47 NDWFS J142927.8+345906 EmO 14 29 27.837 +34 59 06.14   23.18   22   ~ 2 0
48 NDWFS J142929.2+354711 EmO 14 29 29.198 +35 47 10.78   23.17   22.65   ~ 1 0
49 NDWFS J143000.0+353927 EmO 14 29 59.978 +35 39 26.89   23.36   22.89   ~ 1 0
50 NDWFS J143004.7+353509 EmO 14 30 04.687 +35 35 09.06   23.79   23.18   ~ 1 0
51 NDWFS J143006.9+353437 EmO 14 30 06.864 +35 34 36.73   23.05   22.25   ~ 2 0
52 NDWFS J143053.5+352007 EmO 14 30 53.488 +35 20 06.68   23.02   22.59   ~ 1 0
53 NDWFS J143055.2+352855 EmO 14 30 55.192 +35 28 54.76   23.30   22.87   ~ 1 0
54 NDWFS J143055.7+340502 EmO 14 30 55.713 +34 05 01.71   23.04   22.47   ~ 1 0
55 NDWFS J143057.7+354547 EmO 14 30 57.662 +35 45 47.26   23.09   22.66   ~ 1 0
56 NDWFS J143115.1+354148 EmO 14 31 15.055 +35 41 47.76   23.54   22.99   ~ 1 0
57 NDWFS J143128.2+352658 EmO 14 31 28.245 +35 26 57.91   23.06   22.5   ~ 2 0
58 NDWFS J143141.3+352110 EmO 14 31 41.253 +35 21 09.86   23.17   22.69   ~ 1 0
59 NDWFS J143153.1+351436 EmO 14 31 53.066 +35 14 36.45   23.31   22.78   ~ 1 0
60 NDWFS J143202.6+351904 EmO 14 32 02.568 +35 19 04.22   22.99   22.57   ~ 1 0
61 NDWFS J143203.8+351855 EmO 14 32 03.760 +35 18 54.86   23.46   23   ~ 1 0
62 NAME NOAO Deep Wide Field reg 14 32 05.75 +34 16 47.5           ~ 430 0
63 NDWFS J143207.2+343101 EmO 14 32 07.224 +34 31 01.34   23.30   22.49   ~ 2 0
64 NDWFS J143222.8+324943 EmO 14 32 22.768 +32 49 42.67   23.35   22.82   ~ 2 0
65 NDWFS J143230.2+334105 EmO 14 32 30.244 +33 41 05.46   23.25   22.69   ~ 1 0
66 NDWFS J143232.5+351534 EmO 14 32 32.484 +35 15 34.23   23.45   23.15   ~ 1 0
67 NDWFS J143236.9+351800 EmO 14 32 36.883 +35 18 00.32   23.42   22.85   ~ 1 0
68 NDWFS J143302.8+354729 EmO 14 33 02.844 +35 47 29.43   23.42   22.92   ~ 1 0
69 NDWFS J143310.3+335057 EmO 14 33 10.346 +33 50 56.94   23.82   23.24   ~ 1 0
70 NDWFS J143335.8+344503 EmO 14 33 35.764 +34 45 02.84   23.92   23.59   ~ 1 0
71 NDWFS J143348.9+354157 EmO 14 33 48.885 +35 41 56.68   23.74   23.82   ~ 1 0
72 NDWFS J143401.0+351229 EmO 14 34 01.034 +35 12 29.12   23.91   23.72   ~ 1 0
73 NDWFS J143407.5+334141 EmO 14 34 07.476 +33 41 40.56   23.43   23.17   ~ 1 0
74 NDWFS J143410.9+331731 EmO 14 34 10.948 +33 17 30.80   23.18   22.76   ~ 3 0
75 NDWFS J143412.7+332939 EmO 14 34 12.722 +33 29 39.19   23.40   23.18   ~ 4 0
76 NDWFS J143416.4+333058 EmO 14 34 16.420 +33 30 58.10   23.26   22.8   ~ 1 0
77 NDWFS J143422.3+351534 EmO 14 34 22.348 +35 15 34.27   23.50   22.99   ~ 1 0
78 NDWFS J143435.9+350710 EmO 14 34 35.932 +35 07 09.91   23.72   23.15   ~ 1 0
79 NDWFS J143436.4+330406 EmO 14 34 36.448 +33 04 05.62   22.90   22.37   ~ 1 0
80 NDWFS J143438.7+350420 EmO 14 34 38.700 +35 04 19.84   23.72   23.26   ~ 1 0
81 NDWFS J143459.7+333749 EmO 14 34 59.702 +33 37 48.93   23.68   23.2   ~ 1 0
82 NDWFS J143511.0+335543 EmO 14 35 11.030 +33 55 43.10   23.12   22.59   ~ 1 0
83 NDWFS J143512.3+351109 EmO 14 35 12.336 +35 11 08.62   23.53   22.97   ~ 2 0
84 NDWFS J143523.9+354934 EmO 14 35 23.856 +35 49 34.39   23.93   23.51   ~ 1 0
85 NDWFS J143551.3+333421 EmO 14 35 51.278 +33 34 21.03   23.38   22.87   ~ 1 0
86 NDWFS J143641.4+341510 EmO 14 36 41.373 +34 15 10.26   23.50   22.95   ~ 1 0
87 NDWFS J143651.3+342107 EmO 14 36 51.312 +34 21 07.38   23.71   23.43   ~ 1 0
88 NDWFS J143706.6+335653 EmO 14 37 06.588 +33 56 52.65   23.22   22.7   ~ 2 0
89 NDWFS J143833.2+340359 EmO 14 38 33.249 +34 03 59.32   23.74   23.22   ~ 1 0
90 NDWFS J143842.0+335325 EmO 14 38 41.956 +33 53 24.79   23.14   22.51   ~ 1 0
91 SSA 22 reg 22 17 34.7 +00 15 07           ~ 351 0

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