2010ApJ...708..584E

Query : 2010ApJ...708..584E

2010ApJ...708..584E - Astrophys. J., 708, 584-597 (2010/January-1)

A comparison of X-ray and mid-infrared selection of obscured active galactic nuclei.

ECKART M.E., McGREER I.D., STERN D., HARRISON F.A. and HELFAND D.J.

Abstract (from CDS):

We compare the relative merits of active galactic nuclei (AGNs) selection at X-ray and mid-infrared wavelengths using data from moderately deep fields observed by both Chandra and Spitzer. The X-ray-selected AGN sample and associated photometric and spectroscopic optical follow-up are drawn from a subset of fields studied as part of the Serendipitous Extragalactic X-ray Source Identification (SEXSI) program. Mid-infrared data in these fields are derived from targeted and archival Spitzer imaging, and mid-infrared AGN selection is accomplished primarily through application of the Infrared Array Camera (IRAC) color-color AGN "wedge" selection technique. Nearly all X-ray sources in these fields which exhibit clear spectroscopic signatures of AGN activity have mid-infrared colors consistent with IRAC AGN selection. These are predominantly the most luminous X-ray sources. X-ray sources that lack high-ionization and/or broad lines in their optical spectra are far less likely to be selected as AGNs by mid-infrared color selection techniques. The fraction of X-ray sources identified as AGNs in the mid-infrared increases monotonically as the X-ray luminosity increases. Conversely, only 22% of mid-infrared-selected AGNs are detected at X-ray energies in the moderately deep (exp> ~ 100 ks) SEXSI Chandra data. We hypothesize that IRAC sources with AGN colors that lack X-ray detections are predominantly high-luminosity AGNs that are obscured and/or lie at high redshift. A stacking analysis of X-ray-undetected sources shows that objects in the mid-infrared AGN selection wedge have average X-ray fluxes in the 2-8 keV band 3 times higher than sources that fall outside the wedge. Their X-ray spectra are also harder. The hardness ratio of the wedge-selected stack is consistent with moderate intrinsic obscuration, but is not suggestive of a highly obscured, Compton-thick source population. It is evident from this comparative study that in order to create a complete, unbiased census of supermassive black hole growth and evolution, a combination of sensitive infrared, X-ray, and hard X-ray selection is required. We conclude by discussing what samples will be provided by upcoming survey missions such as WISE, eROSITA, and NuSTAR.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - infrared: galaxies - X-rays: galaxies

VizieR on-line data: <Available at CDS (J/ApJ/708/584): table2.dat>

Simbad objects: 302

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Number of rows : 302
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4600 2
2 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2086 1
3 2XMM J084809.9+444903 QSO 08 48 09.9466094376 +44 49 02.423297460   21.22 21.06     ~ 16 0
4 CXOSEXSI J084811.7+445302 X 08 48 11.77 +44 53 03.3       23.460   ~ 5 0
5 SDSS J084812.46+445657.4 QSO 08 48 12.4586882328 +44 56 57.449323752           ~ 17 0
6 CXOSEXSI J084818.4+444844 EmG 08 48 18.52 +44 48 45.5       20.660   ~ 5 0
7 CXOSEXSI J084820.8+445648 X 08 48 20.87 +44 56 49.3           ~ 4 0
8 CXOSEXSI J084822.2+445627 X 08 48 22.28 +44 56 28.9           ~ 3 0
9 [STS2002] 70 AGN 08 48 22.3 +44 52 25       23.320   ~ 6 0
10 CXOSEXSI J084824.6+445355 EmG 08 48 24.70 +44 53 56.3       22.210   ~ 4 0
11 SDSS J084825.26+444809.7 QSO 08 48 25.2659601480 +44 48 09.732435912       20.730   ~ 17 0
12 SDSS J084827.35+445434.7 QSO 08 48 27.3474879480 +44 54 34.679845980   20.78 20.35 20.330   ~ 17 0
13 CXOSEXSI J084827.4+445604 EmG 08 48 27.51 +44 56 06.0       23.670   ~ 5 0
14 CXOSEXSI J084830.2+445604 X 08 48 30.23 +44 56 06.0       24.400   ~ 5 0
15 [STS2002] 60 EmG 08 48 31.72 +44 54 42.9       25.420   ~ 8 0
16 CXOSEXSI J084832.7+445711 EmG 08 48 32.75 +44 57 12.2       22.010   ~ 4 0
17 CXOSEXSI J084834.4+444937 X 08 48 34.42 +44 49 38.7           ~ 3 0
18 CXOSEXSI J084834.5+444947 X 08 48 34.60 +44 49 48.6           ~ 3 0
19 ClG J0848+4453 ClG 08 48 34.800 +44 53 41.90           ~ 123 1
20 CXOSEXSI J084836.2+445250 X 08 48 36.31 +44 52 51.7           ~ 3 0
21 3XMM J084837.1+444819 Sy1 08 48 37.0838048160 +44 48 19.664536212       20.670   ~ 21 0
22 2XMM J084837.6+445712 Sy1 08 48 37.626 +44 57 12.19     23.060     ~ 9 0
23 CXOSEXSI J084837.7+445743 X 08 48 37.76 +44 57 45.0           ~ 3 0
24 [STS2002] 52 AGN 08 48 38.0 +44 53 53       24.220   ~ 30 0
25 2XMM J084840.3+445801 AGN 08 48 40.406 +44 58 01.01       21.230   ~ 8 0
26 [VV2006] J084840.6+445732 QSO 08 48 40.6380953184 +44 57 33.043394268     20.34 20.460   ~ 15 0
27 CXOSEXSI J084843.2+445806 AGN 08 48 43.25 +44 58 07.2       21.540   ~ 6 0
28 CXOSEXSI J084845.1+445453 EmG 08 48 45.18 +44 54 54.6       23.420   ~ 4 0
29 CXOSEXSI J084845.4+445651 EmG 08 48 45.45 +44 56 52.8       24.930   ~ 5 0
30 [STS2002] 48 AGN 08 48 46.11 +44 59 46.3       21.450   ~ 7 0
31 CXOSEXSI J084846.4+444830 EmG 08 48 46.46 +44 48 32.0       20.550   ~ 5 0
32 CXOSEXSI J084846.5+445358 EmG 08 48 46.61 +44 53 59.8       24.400   ~ 5 0
33 CXOSEXSI J084852.3+445744 X 08 48 52.39 +44 57 46.0           ~ 3 0
34 CXOSEXSI J084853.8+445351 EmG 08 48 53.85 +44 53 52.7       21.680   ~ 5 0
35 SDSS J084854.47+445150.0 QSO 08 48 54.469 +44 51 50.08   21.43 20.93 20.570   ~ 20 0
36 [STS2002] 155 EmG 08 48 55.3 +44 50 11       22.740   ~ 6 0
37 [VV2010c] J084856.7+445226 AGN 08 48 56.7 +44 52 26     23.38 22.040   ~ 8 0
38 EES 82 EmG 08 48 57.73 +44 56 09.5       22.300   ~ 8 0
39 2XMM J084858.0+445435 Sy1 08 48 58.1403325488 +44 54 35.233593876   20.67 20.30 19.580   ~ 24 0
40 CXOSEXSI J084858.6+445751 X 08 48 58.63 +44 57 52.2           ~ 3 0
41 2XMM J084900.4+444703 AG? 08 49 00.484 +44 47 03.12           ~ 5 0
42 2XMM J084902.3+450004 QSO 08 49 02.275 +45 00 04.41       19.620   ~ 9 0
43 [STS2002] 35 AGN 08 49 02.5 +44 57 06       22.570   ~ 6 0
44 SDSS J084902.55+450039.8 QSO 08 49 02.542 +45 00 39.84       20.230   ~ 16 0
45 CXOMP J084904.0+445024 AGN 08 49 04.0 +44 50 25       23.920   ~ 8 0
46 CXOSEXSI J084904.0+445646 AGN 08 49 04.10 +44 56 47.3       25.120   ~ 6 0
47 CXOSEXSI J084904.2+444939 X 08 49 04.31 +44 49 40.2           ~ 3 0
48 CXOSEXSI J084904.5+445336 X 08 49 04.58 +44 53 38.0           ~ 3 0
49 2XMM J084904.6+445321 G 08 49 04.617 +44 53 21.47           ~ 6 0
50 [VV2006] J084905.1+445715 QSO 08 49 05.0720835432 +44 57 14.726399724   20.79 20.38 19.540   ~ 43 0
51 CXOMP J084905.2+445202 AGN 08 49 05.32 +44 52 03.7       24.610   ~ 11 0
52 CXOSEXSI J084905.4+450057 X 08 49 05.47 +45 00 58.3           ~ 3 0
53 [STS2002] 157 X 08 49 06.0 +44 50 38       23.990   ~ 6 0
54 [STS2002] 29 AGN 08 49 06.4 +45 01 09       21.980   ~ 6 0
55 [STS2002] 27 AGN 08 49 07.2 +44 58 15       22.590   ~ 6 0
56 CXOSEXSI J084907.5+450151 EmG 08 49 07.54 +45 01 52.3       22.360   ~ 5 0
57 [STS2002] 25 AGN 08 49 08.3 +44 58 10       23.970   ~ 6 0
58 [STS2002] 24 EmG 08 49 08.66 +44 58 43.3       25.160   ~ 6 0
59 CXOSEXSI J084908.9+450026 X 08 49 09.02 +45 00 27.8           ~ 3 0
60 [STS2002] 22 AGN 08 49 11.4 +44 50 08       23.280   ~ 6 0
61 CXOSEXSI J084911.7+450201 X 08 49 11.74 +45 02 02.8           ~ 3 0
62 CXOSEXSI J084912.8+444659 X 08 49 12.86 +44 47 00.4           ~ 3 0
63 CXOSEXSI J084913.6+445238 EmG 08 49 13.67 +44 52 39.1       24.060   ~ 5 0
64 CXOSEXSI J084914.6+445230 X 08 49 14.64 +44 52 31.8           ~ 3 0
65 CXOSEXSI J084916.2+445954 X 08 49 16.23 +44 59 55.6       25.620   ~ 5 0
66 [STS2002] 152 EmG 08 49 18.05 +45 01 15.2       23.250   ~ 5 0
67 CXOSEXSI J084919.5+445707 EmG 08 49 19.57 +44 57 08.1           ~ 5 0
68 CXOSEXSI J090954.0+541752 AGN 09 09 54.00 +54 17 55.1       22.070   ~ 5 0
69 CXOSEXSI J090955.5+541813 AGN 09 09 55.70 +54 18 14.6       22.210   ~ 5 0
70 CXOSEXSI J090959.6+542458 X 09 09 59.66 +54 25 01.2           ~ 3 0
71 CXOSEXSI J091004.7+542050 X 09 10 04.80 +54 20 52.3           ~ 3 0
72 CXOSEXSI J091008.0+541401 EmG 09 10 08.11 +54 14 04.1       22.580   ~ 4 0
73 CXOSEXSI J091008.2+541524 EmG 09 10 08.25 +54 15 26.5       21.940   ~ 4 0
74 CXOSEXSI J091009.7+541507 X 09 10 09.74 +54 15 09.5           ~ 3 0
75 SDSS J091012.71+541204.6 G 09 10 12.71544 +54 12 04.6404       22.490   ~ 4 0
76 SDSS J091014.31+541257.9 QSO 09 10 14.3075541840 +54 12 57.976518852           ~ 11 0
77 2MASS J09101744+5417588 * 09 10 17.4661860912 +54 17 59.081587008       12.790   ~ 5 0
78 CXOSEXSI J091018.6+541316 X 09 10 18.71 +54 13 18.7           ~ 3 0
79 SDSS J091020.79+541850.8 QSO 09 10 20.7941530632 +54 18 50.887210680       19.640   ~ 13 0
80 CXOSEXSI J091021.9+541529 EmG 09 10 21.98 +54 15 31.9       23.440   ~ 4 0
81 CXOSEXSI J091022.2+542007 EmG 09 10 22.32 +54 20 09.8       22.370   ~ 4 0
82 SDSS J091023.37+541401.0 QSO 09 10 23.373 +54 14 01.04   21.36 20.95 20.680   ~ 7 0
83 CXOSEXSI J091023.7+541514 X 09 10 23.83 +54 15 16.4           ~ 3 0
84 SDSS J091026.91+541243.9 QSO 09 10 26.9221394160 +54 12 43.840455516       18.780   ~ 9 0
85 CXOSEXSI J091027.0+542054 QSO 09 10 27.0 +54 20 56       21.580   ~ 6 0
86 CXOSEXSI J091028.5+542320 AGN 09 10 28.6 +54 23 22       23.680   ~ 5 0
87 CXOSEXSI J091028.6+541634 EmG 09 10 28.69 +54 16 37.0       22.910   ~ 4 0
88 CXOSEXSI J091028.9+541523 AGN 09 10 29.1 +54 15 25       22.030   ~ 6 0
89 CXOSEXSI J091030.9+541914 X 09 10 30.99 +54 19 16.7       23.880   ~ 4 0
90 CXOSEXSI J091031.4+542157 X 09 10 31.4 +54 21 59           ~ 4 0
91 CXOSEXSI J091031.7+542024 X 09 10 31.79 +54 20 26.6           ~ 3 0
92 CXOSEXSI J091031.9+542342 X 09 10 31.94 +54 23 45.0       25.370   ~ 4 0
93 CXOSEXSI J091032.9+541246 EmG 09 10 33.00 +54 12 48.4       19.630   ~ 4 0
94 CXOSEXSI J091033.2+541526 X 09 10 33.28 +54 15 29.0           ~ 3 0
95 CXOSEXSI J091034.2+542408 EmG 09 10 34.25 +54 24 10.7     22.20 21.89   ~ 5 0
96 CXOSEXSI J091034.5+541918 X 09 10 34.54 +54 19 20.6           ~ 3 0
97 CXOSEXSI J091037.8+541543 X 09 10 37.89 +54 15 46.1       23.590   ~ 4 0
98 CXOSEXSI J091037.9+541608 EmG 09 10 37.98 +54 16 10.4       22.420   ~ 4 0
99 SDSS J091038.61+542027.8 QSO 09 10 38.6119756320 +54 20 27.889316484           ~ 5 0
100 CXOSEXSI J091039.2+541320 X 09 10 39.25 +54 13 22.8           ~ 3 0
101 CXOSEXSI J091039.8+542032 QSO 09 10 39.84648 +54 20 34.5156       21.930   ~ 6 0
102 CXOSEXSI J091040.0+542259 EmG 09 10 40.1 +54 23 01       20.760   ~ 5 0
103 CXOSEXSI J091040.5+542033 X 09 10 40.63 +54 20 35.6           ~ 3 0
104 CXOSEXSI J091040.8+542006 AGN 09 10 40.90 +54 20 08.8       22.380   ~ 6 0
105 2XMM J091041.5+541947 AGN 09 10 41.490 +54 19 47.55     21.69 21.57   ~ 8 0
106 [VV2010c] J091041.9+542129 AGN 09 10 41.9 +54 21 29     22.48 22.05   ~ 7 0
107 [VV2010c] J091042.0+542343 AGN 09 10 42.0 +54 23 43       23.020   ~ 7 0
108 CXOSEXSI J091042.7+542008 X 09 10 42.7 +54 20 10           ~ 4 0
109 CXOMP J091042.7+542036 AGN 09 10 42.7 +54 20 36     23.38 22.97   ~ 7 0
110 CXOSEXSI J091042.6+541618 X 09 10 42.71 +54 16 20.9           ~ 3 0
111 CXOSEXSI J091043.8+541724 X 09 10 43.92 +54 17 27.0           ~ 3 0
112 CXOSEXSI J091044.7+542408 X 09 10 44.79 +54 24 11.2           ~ 3 0
113 ClG J0910+5422 ClG 09 10 44.9 +54 22 09           ~ 91 0
114 2MASS J09104577+5420217 PM* 09 10 45.7629536832 +54 20 21.773983488           ~ 5 0
115 CXOSEXSI J091046.1+542239 X 09 10 46.1 +54 22 41           ~ 4 0
116 CXOSEXSI J091046.4+541856 X 09 10 46.49 +54 18 58.3           ~ 3 0
117 [TFK2008] LRIS-1121 EmG 09 10 47.6 +54 22 13     24.12 23.42   ~ 6 0
118 CXOSEXSI J091047.6+541446 X 09 10 47.64 +54 14 48.9           ~ 3 0
119 CXOSEXSI J091049.7+541330 EmG 09 10 49.80 +54 13 33.2       23.520   ~ 4 0
120 CXOSEXSI J091050.6+541036 X 09 10 50.68 +54 10 39.0           ~ 3 0
121 CXOSEXSI J091052.5+541812 X 09 10 52.55 +54 18 14.4           ~ 3 0
122 CXOSEXSI J091052.9+541701 X 09 10 52.97 +54 17 03.3           ~ 3 0
123 CXOSEXSI J091053.3+541819 AGN 09 10 53.4 +54 18 21       22.930   ~ 5 0
124 CXOSEXSI J091053.8+542235 X 09 10 53.9 +54 22 37           ~ 4 0
125 CXOSEXSI J091054.5+541322 X 09 10 54.62 +54 13 25.0           ~ 3 0
126 CXOSEXSI J091057.0+542340 AGN 09 10 57.1 +54 23 43       22.530   ~ 5 0
127 CXOSEXSI J091057.9+541811 X 09 10 57.98 +54 18 13.6           ~ 3 0
128 CXOSEXSI J091058.4+541413 X 09 10 58.51 +54 14 15.8           ~ 3 0
129 CXOSEXSI J091059.0+541614 X 09 10 59.07 +54 16 16.3           ~ 3 0
130 2XMM J091059.4+541717 AGN 09 10 59.445 +54 17 17.06       22.460   ~ 7 0
131 [TFK2008] LRIS-1710 AGN 09 10 59.8 +54 23 38     21.53 20.66   ~ 6 0
132 2XMM J091100.2+542543 QSO 09 11 00.317 +54 25 42.90       21.410   ~ 7 0
133 CXOSEXSI J091101.9+542705 X 09 11 01.98 +54 27 08.2           ~ 3 0
134 CXOSEXSI J091105.5+541808 X 09 11 05.59 +54 18 10.6           ~ 3 0
135 CXOSEXSI J091105.8+542333 X 09 11 05.90 +54 23 36.1           ~ 3 0
136 CXOSEXSI J091106.9+542510 X 09 11 06.96 +54 25 12.3           ~ 3 0
137 CXOSEXSI J091107.5+541839 X 09 11 07.62 +54 18 41.7           ~ 3 0
138 CXOSEXSI J091107.8+541822 AGN 09 11 07.9 +54 18 24       21.660   ~ 5 0
139 CXOSEXSI J091108.5+541752 QSO 09 11 08.519 +54 17 54.39       22.380   ~ 6 0
140 CXOSEXSI J091109.6+541937 X 09 11 09.73 +54 19 39.8           ~ 3 0
141 CXOSEXSI J091110.2+541920 X 09 11 10.33 +54 19 22.8           ~ 3 0
142 CXOSEXSI J091112.8+542306 EmG 09 11 12.86 +54 23 08.4       23.650   ~ 4 0
143 CXOSEXSI J091115.4+541919 X 09 11 15.51 +54 19 21.3       23.300   ~ 4 0
144 CXOSEXSI J091116.2+542317 X 09 11 16.30 +54 23 19.9           ~ 3 0
145 CXOSEXSI J091116.7+542445 X 09 11 16.83 +54 24 47.4           ~ 3 0
146 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5858 6
147 NGC 4429 GiG 12 27 26.5040002440 +11 06 27.588767616   11.4       ~ 317 0
148 NAME Chandra Deep Field-North reg 12 36.8 +62 13           ~ 658 0
149 CXOSEXSI J131652.5+290603 X 13 16 52.70 +29 06 04.8           ~ 3 0
150 CXOSEXSI J131655.4+290753 EmG 13 16 55.581 +29 07 54.13       19.120   ~ 5 0
151 CXOSEXSI J131657.9+290554 X 13 16 58.08 +29 05 56.1           ~ 3 0
152 CXOSEXSI J131659.4+290330 X 13 16 59.53 +29 03 31.8           ~ 3 0
153 CXOSEXSI J131700.3+290936 X 13 17 00.43 +29 09 38.2           ~ 3 0
154 CXOSEXSI J131701.2+290657 AGN 13 17 01.4 +29 06 59       20.480   ~ 5 0
155 CXOSEXSI J131704.7+290331 X 13 17 04.86 +29 03 33.2           ~ 3 0
156 CXOSEXSI J131705.9+290538 X 13 17 06.03 +29 05 39.8           ~ 3 0
157 2XMM J131706.1+290918 QSO 13 17 06.1582277544 +29 09 17.960610528   20.98 20.42 19.940   ~ 7 0
158 CXOSEXSI J131706.2+291058 EmG 13 17 06.35 +29 10 59.8       20.510   ~ 4 0
159 CXOSEXSI J131706.5+290445 X 13 17 06.71 +29 04 47.1           ~ 3 0
160 CXOSEXSI J131708.6+291117 QSO 13 17 08.8078540584 +29 11 18.752326332       19.800   ~ 5 0
161 CXOSEXSI J131711.1+291024 X 13 17 11.24 +29 10 25.8           ~ 3 0
162 CXOSEXSI J131711.9+291008 X 13 17 12.06 +29 10 09.9           ~ 3 0
163 CXOSEXSI J131714.5+291041 QSO 13 17 14.6481026640 +29 10 42.403167840       20.640   ~ 5 0
164 CXOSEXSI J131714.7+290636 EmG 13 17 14.82 +29 06 37.8       18.390   ~ 4 0
165 CXOSEXSI J131715.6+290642 X 13 17 15.76 +29 06 44.1           ~ 3 0
166 CXOSEXSI J131717.1+290639 QSO 13 17 17.2409704872 +29 06 40.447661220       19.570   ~ 5 0
167 CXOSEXSI J131718.8+291111 AGN 13 17 19.0 +29 11 12       21.980   ~ 6 0
168 ClG J1317+2911 ClG 13 17 21.70 +29 11 18.1           ~ 30 0
169 CXOSEXSI J131722.0+291124 EmG 13 17 22.12 +29 11 25.8       24.150   ~ 4 0
170 CXOSEXSI J131723.6+291350 X 13 17 23.76 +29 13 52.0           ~ 3 0
171 CXOSEXSI J131724.0+290955 X 13 17 24.18 +29 09 56.9           ~ 3 0
172 CXOSEXSI J131727.4+290930 EmG 13 17 27.59 +29 09 32.0       22.050   ~ 4 0
173 CXOSEXSI J131728.6+291215 X 13 17 28.75 +29 12 17.0           ~ 3 0
174 CXOSEXSI J131730.7+291055 QSO 13 17 30.875 +29 10 56.55       21.740   ~ 5 0
175 CXOSEXSI J131730.8+291217 EmG 13 17 30.94 +29 12 19.4       22.560   ~ 4 0
176 CXOSEXSI J131731.7+291328 X 13 17 31.87 +29 13 30.5           ~ 3 0
177 CXOSEXSI J131731.9+291650 X 13 17 32.02 +29 16 51.8           ~ 3 0
178 CXOSEXSI J131732.1+290936 X 13 17 32.24 +29 09 38.2           ~ 3 0
179 CXOSEXSI J131732.9+291055 EmG 13 17 33.06 +29 10 57.3       21.610   ~ 4 0
180 CXOSEXSI J131736.5+291114 QSO 13 17 36.7186668024 +29 11 16.063490292   20.69 20.28 19.880   ~ 6 0
181 CXOSEXSI J131736.6+291436 X 13 17 36.78 +29 14 38.3           ~ 3 0
182 CXOSEXSI J131737.3+291524 X 13 17 37.50 +29 15 26.4       22.810   ~ 4 0
183 CXOSEXSI J133745.4+292657 X 13 37 45.54 +29 26 59.0           ~ 3 0
184 CXOSEXSI J133749.6+293114 X 13 37 49.78 +29 31 15.9           ~ 3 0
185 CXOSEXSI J133751.1+292045 X 13 37 51.24 +29 20 47.0           ~ 3 0
186 SDSS J133753.30+292434.3 QSO 13 37 53.3063646696 +29 24 34.334985888   20.80 20.60 19.900   ~ 13 0
187 CXOSEXSI J133754.2+292618 X 13 37 54.35 +29 26 19.7           ~ 3 0
188 SDSS J133755.64+292746.3 G 13 37 55.64016 +29 27 46.3788       19.520   ~ 4 0
189 2MASS J13375797+2926095 EmG 13 37 57.9750630144 +29 26 09.682776528       18.300   ~ 4 0
190 CXOSEXSI J133759.1+292939 X 13 37 59.24 +29 29 40.4           ~ 3 0
191 CXOSEXSI J133800.7+292927 EmG 13 38 00.82 +29 29 29.0       23.000   ~ 4 0
192 CXOSEXSI J133801.0+292448 X 13 38 01.18 +29 24 49.8           ~ 3 0
193 CXOSEXSI J133803.0+292825 EmG 13 38 03.11 +29 28 26.9       21.860   ~ 4 0
194 CXOSEXSI J133803.0+292205 X 13 38 03.17 +29 22 06.9           ~ 3 0
195 CXOSEXSI J133803.6+292915 AGN 13 38 03.8 +29 29 16       22.460   ~ 5 0
196 SDSS J133805.21+292423.6 QSO 13 38 05.2140991008 +29 24 23.687181216   20.93 20.49 20.380   ~ 12 0
197 CXOSEXSI J133805.9+293024 X 13 38 06.08 +29 30 26.0           ~ 3 0
198 CXOSEXSI J133807.0+292852 EmG 13 38 07.16 +29 28 53.9       23.000   ~ 4 0
199 CXOSEXSI J133807.2+293006 X 13 38 07.35 +29 30 07.4           ~ 3 0
200 CXOSEXSI J133807.2+292734 AGN 13 38 07.4 +29 27 36       23.420   ~ 5 0
201 CXOSEXSI J133808.9+292412 QSO 13 38 08.9563475736 +29 24 12.904742160       19.640   ~ 5 0
202 CXOSEXSI J133808.8+293128 EmG 13 38 08.98 +29 31 29.6       22.950   ~ 4 0
203 CXOSEXSI J133810.9+293119 QSO 13 38 11.0138305632 +29 31 19.857134532   20.37 20.19 19.810   ~ 6 0
204 CXOSEXSI J133811.4+292621 X 13 38 11.57 +29 26 22.9           ~ 3 0
205 CXOSEXSI J133814.7+293431 X 13 38 14.85 +29 34 32.6           ~ 3 0
206 CXOSEXSI J133816.8+292350 EmG 13 38 16.98 +29 23 51.5       22.890   ~ 4 0
207 CXOSEXSI J133817.0+293014 X 13 38 17.12 +29 30 16.0           ~ 3 0
208 CXOSEXSI J133818.8+292941 X 13 38 18.99 +29 29 42.7           ~ 3 0
209 CXOSEXSI J133824.2+292917 X 13 38 24.32 +29 29 18.5           ~ 3 0
210 CXOSEXSI J133824.4+293154 X 13 38 24.55 +29 31 55.6           ~ 3 0
211 CXOSEXSI J133825.7+292956 AGN 13 38 25.8 +29 29 57       23.180   ~ 5 0
212 SDSS J133833.06+292908.5 CV* 13 38 33.06216 +29 29 08.5164   20.7   19.6   ~ 5 0
213 CXOSEXSI J133836.0+292940 EmG 13 38 36.15 +29 29 41.4       20.420   ~ 4 0
214 NAME Extended Groth Strip reg 14 19 +52.8           ~ 825 0
215 NAME NOAO Deep Wide Field reg 14 32 05.75 +34 16 47.5           ~ 394 0
216 CXOSEXSI J171613.3+671133 AGN 17 16 13.4 +67 11 32       22.990   ~ 5 0
217 CXOSEXSI J171614.4+671344 AGN 17 16 14.6 +67 13 43       23.070   ~ 6 0
218 CXOSEXSI J171621.3+671312 AGN 17 16 21.4 +67 13 11       21.130   ~ 5 0
219 CXOSEXSI J171624.7+671239 AGN 17 16 24.8 +67 12 38       23.990   ~ 5 0
220 CXOSEXSI J171626.3+672015 X 17 16 26.45 +67 20 14.3           ~ 3 0
221 CXOSEXSI J171629.9+672042 X 17 16 30.04 +67 20 41.7           ~ 3 0
222 CXOSEXSI J171632.8+670636 X 17 16 32.92 +67 06 35.3           ~ 3 0
223 CXOSEXSI J171634.5+671140 X 17 16 34.67 +67 11 39.2           ~ 3 0
224 CXOMP J171635.5+671626 AGN 17 16 35.6 +67 16 25       20.190   ~ 7 0
225 4C 67.26 AGN 17 16 36.8 +67 08 29       22.000   ~ 18 1
226 CXOSEXSI J171637.9+671307 AGN 17 16 38.0 +67 13 06       23.270   ~ 5 0
227 CXOSEXSI J171638.0+671155 AGN 17 16 38.2 +67 11 54       22.920   ~ 6 0
228 CXOSEXSI J171639.7+671640 AGN 17 16 39.8 +67 16 39       23.360   ~ 5 0
229 ClG J1716+6708 ClG 17 16 49.6 +67 08 30           ~ 134 0
230 [HSE2011] RXJ1716-X1 AGN 17 16 51.8 +67 08 54       23.900   ~ 6 0
231 CXOSEXSI J171652.0+671508 AGN 17 16 52.1 +67 15 07       22.840   ~ 5 0
232 CXOSEXSI J171653.1+670750 X 17 16 53.2 +67 07 50           ~ 4 0
233 [VV2006] J171700.7+670519 QSO 17 17 00.6097 +67 05 19.024       20.680   ~ 8 0
234 CXOSEXSI J171702.6+670704 X 17 17 02.7 +67 07 04           ~ 4 0
235 CXOMP J171703.8+670859 AGN 17 17 03.9 +67 09 00       21.790   ~ 8 0
236 CXOSEXSI J171706.8+670423 X 17 17 06.98 +67 04 22.5           ~ 3 0
237 CXOSEXSI J171707.3+670840 X 17 17 07.4 +67 08 40           ~ 4 0
238 CXOSEXSI J171709.1+670821 X 17 17 09.2 +67 08 21           ~ 4 0
239 CXOSEXSI J171711.2+671819 X 17 17 11.34 +67 18 18.1           ~ 3 0
240 CXOSEXSI J171713.4+671433 QSO 17 17 13.409 +67 14 32.53       21.660   ~ 5 0
241 CXOSEXSI J171714.5+671136 EmG 17 17 14.65 +67 11 35.0       22.680   ~ 5 0
242 CXOSEXSI J171715.1+671217 EmG 17 17 15.23 +67 12 15.8       23.900   ~ 4 0
243 CXOSEXSI J171719.6+671411 X 17 17 19.69 +67 14 10.4           ~ 3 0
244 CXOSEXSI J171724.7+670913 EmG 17 17 24.81 +67 09 11.9       17.160   ~ 4 0
245 CXOSEXSI J171725.3+670616 QSO 17 17 25.515 +67 06 15.60       21.300   ~ 5 0
246 CXOSEXSI J171731.9+670934 AGN 17 17 32.0 +67 09 34       23.360   ~ 5 0
247 CXOSEXSI J171733.3+670733 X 17 17 33.42 +67 07 32.5           ~ 3 0
248 [VV2006] J171740.6+671146 QSO 17 17 40.402 +67 11 46.12       21.830   ~ 7 0
249 CXOSEXSI J171747.4+671449 EmG 17 17 47.58 +67 14 48.3       22.910   ~ 4 0
250 CXOMP J171748.3+670544 AGN 17 17 48.6 +67 05 44       19.740   ~ 7 0
251 CXOSEXSI J171749.2+671017 X 17 17 49.34 +67 10 16.7           ~ 3 0
252 CXOSEXSI J171758.0+671529 X 17 17 58.10 +67 15 28.1           ~ 3 0
253 [VV2006] J171758.5+671202 QSO 17 17 58.4288367504 +67 12 01.888327620       20.870   ~ 7 0
254 CXOSEXSI J171805.1+671139 X 17 18 05.25 +67 11 38.2           ~ 3 0
255 CXOSEXSI J171806.0+671219 EmG 17 18 06.11 +67 12 18.1       22.560   ~ 4 0
256 CXOSEXSI J224702.2+034341 X 22 47 02.26 +03 43 40.9           ~ 3 0
257 CXOSEXSI J224703.1+034350 EmG 22 47 03.17 +03 43 49.6       19.780   ~ 4 0
258 CXOSEXSI J224704.1+034703 X 22 47 04.20 +03 47 02.7           ~ 3 0
259 CXOSEXSI J224704.3+034141 X 22 47 04.44 +03 41 40.4           ~ 3 0
260 CXOSEXSI J224706.0+033951 AGN 22 47 06.1 +03 39 50       20.010   ~ 5 0
261 CXOSEXSI J224706.8+033823 X 22 47 06.92 +03 38 22.1           ~ 3 0
262 CXOSEXSI J224707.5+034629 EmG 22 47 07.62 +03 46 28.1       22.020   ~ 4 0
263 CXOSEXSI J224708.7+033619 X 22 47 08.80 +03 36 18.8       23.400   ~ 4 0
264 CXOSEXSI J224710.2+033657 EmG 22 47 10.34 +03 36 56.4       23.400   ~ 4 0
265 CXOSEXSI J224710.5+033738 QSO 22 47 10.7 +03 37 37       23.400   ~ 5 0
266 CXOSEXSI J224712.0+034124 EmG 22 47 12.10 +03 41 23.7       23.400   ~ 4 0
267 CXOSEXSI J224716.7+034127 AGN 22 47 16.8 +03 41 26       19.270   ~ 5 0
268 CXOSEXSI J224716.9+033432 QSO 22 47 17.037 +03 34 30.82       21.320   ~ 6 0
269 CXOSEXSI J224717.4+033230 EmG 22 47 17.45 +03 32 29.1       23.530   ~ 4 0
270 CXOSEXSI J224718.0+033822 X 22 47 18.11 +03 38 21.6           ~ 3 0
271 CXOSEXSI J224718.7+033651 AGN 22 47 18.8 +03 36 50       23.000   ~ 5 0
272 CXOSEXSI J224719.9+033836 X 22 47 20.00 +03 38 35.9           ~ 3 0
273 CXOSEXSI J224720.5+033249 EmG 22 47 20.61 +03 32 48.6       23.170   ~ 4 0
274 CXOSEXSI J224721.0+034113 X 22 47 21.10 +03 41 12.8           ~ 3 0
275 CXOSEXSI J224722.2+034319 EmG 22 47 22.33 +03 43 18.0       22.480   ~ 4 0
276 CXOSEXSI J224722.3+034411 X 22 47 22.36 +03 44 10.6           ~ 3 0
277 CXOSEXSI J224728.1+034513 X 22 47 28.17 +03 45 12.9           ~ 3 0
278 BAX 341.8712+03.6203 ClG 22 47 29.5 +03 37 08           ~ 25 1
279 CXOSEXSI J224729.5+033916 EmG 22 47 29.57 +03 39 15.5       22.850   ~ 4 0
280 CXOSEXSI J224729.8+034559 QSO 22 47 29.8496640240 +03 45 58.338798516       18.730   ~ 6 0
281 CXOSEXSI J224729.8+034232 X 22 47 29.93 +03 42 31.1       23.400   ~ 4 0
282 CXOSEXSI J224731.1+034709 EmG 22 47 31.22 +03 47 08.0       21.160   ~ 4 0
283 CXOSEXSI J224731.6+033550 AGN 22 47 31.7 +03 35 49       20.850   ~ 6 0
284 CXOSEXSI J224731.9+033636 X 22 47 32.00 +03 36 35.8           ~ 3 0
285 CXOSEXSI J224732.0+033859 QSO 22 47 32.1 +03 38 58       21.780   ~ 5 0
286 CXOSEXSI J224732.2+033818 EmG 22 47 32.26 +03 38 17.6       21.050   ~ 4 0
287 CXOSEXSI J224732.9+033648 X 22 47 32.95 +03 36 47.4           ~ 3 0
288 CXOSEXSI J224733.7+034617 X 22 47 33.79 +03 46 16.6           ~ 3 0
289 CXOSEXSI J224734.1+033510 EmG 22 47 34.15 +03 35 09.3       22.230   ~ 4 0
290 CXOSEXSI J224734.2+033608 EmG 22 47 34.28 +03 36 07.7       22.040   ~ 4 0
291 CXOSEXSI J224735.4+034005 X 22 47 35.52 +03 40 04.6       22.620   ~ 4 0
292 CXOSEXSI J224737.5+033915 X 22 47 37.59 +03 39 14.6           ~ 3 0
293 CXOSEXSI J224737.6+033645 AGN 22 47 37.7 +03 36 44       23.510   ~ 5 0
294 CXOSEXSI J224738.8+033758 X 22 47 38.91 +03 37 57.8           ~ 3 0
295 CXOSEXSI J224739.0+034129 EmG 22 47 39.13 +03 41 28.8       23.230   ~ 4 0
296 CXOSEXSI J224739.1+034416 QSO 22 47 39.1547391384 +03 44 14.821088208       19.180   ~ 6 0
297 CXOSEXSI J224739.6+033311 X 22 47 39.66 +03 33 10.9           ~ 3 0
298 CXOSEXSI J224740.5+033913 X 22 47 40.59 +03 39 12.8           ~ 3 0
299 CXOSEXSI J224742.9+033301 X 22 47 43.00 +03 33 00.5           ~ 3 0
300 CXOSEXSI J224744.5+034314 AGN 22 47 44.6 +03 43 13       21.800   ~ 5 0
301 CXOSEXSI J224745.3+033740 AGN 22 47 45.4 +03 37 39       21.630   ~ 5 0
302 CXOSEXSI J224745.9+033630 X 22 47 46.04 +03 36 29.8       24.830   ~ 4 0

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