2006A&A...457...79G

Query : 2006A&A...457...79G

2006A&A...457...79G - Astronomy and Astrophysics, volume 45779-90 (2006/10-1)

The VIMOS VLT Deep Survey: the faint type-1 AGN sample.

GAVIGNAUD I., BONGIORNO A., PALTANI S., MATHEZ G., ZAMORANI G., MOLLER P., PICAT J.P., LE BRUN V., MARANO B., LE FEVRE O., BOTTINI D., GARILLI B., MACCAGNI D., SCARAMELLA R., SCODEGGIO M., TRESSE L., VETTOLANI G., ZANICHELLI A., ADAMI C., ARNABOLDI M., ARNOUTS S., BARDELLI S., BOLZONELLA M., CAPPI A., CHARLOT S., CILIEGI P., CONTINI T., FOUCAUD S., FRANZETTI P., GUZZO L., ILBERT O., IOVINO A., McCRACKEN H.J., MARINONI C., MAZURE A., MENEUX B., MERIGHI R., PELLO R., POLLO A., POZZETTI L., RADOVICH M., ZUCCA E., BONDI M., BUSARELLO G., CUCCIATI O., DE LA TORRE S., GREGORINI L., LAMAREILLE F., MELLIER Y., MERLUZZI P., RIPEPI V., RIZZO D. and VERGANI D.

Abstract (from CDS):

We present the type-1 active galactic nuclei (AGN) sample extracted from the VIMOS VLT Deep Survey's first observations of 21000 spectra in 1.75deg2. This sample, which is purely magnitude-limited and free of morphological or color-selection biases, contains 130 broad-line AGN (BLAGN) spectra with redshift up to 5. Our data are divided into a wide (IAB≤22.5) and a deep (IAB≤24) subsample containing 56 and 74 objects, respectively. Because of its depth and selection criteria, this sample is uniquely suited for studying the population of faint type-1 AGN. Our measured surface density (∼472±48 BLAGN per square degree with IAB≤24) is significantly higher than that of any other optically selected sample of BLAGN with spectroscopic confirmation. By applying a morphological and color analysis to our AGN sample, we find that (1) ∼23% of the AGN brighter than IAB=22.5 are classified as extended, and this percentage increases to ∼42% for those with z<1.6; (2) a non-negligible fraction of our BLAGN are lying close to the color-space area occupied by stars in the u*-g' versus g'-r' color-color diagram. This leads us to the conclusion that the classical optical-ultraviolet preselection technique, if employed at such deep magnitudes (IAB=22.5) in conjuction with a preselection of point-like sources, can miss up to ∼35% of the AGN population. Finally, we present a composite spectrum of our sample of objects. While the continuum shape is very similar to that of the SDSS composite at short wavelengths, it is much redder than that of the SDSS composite at λ≥3000Å. We interpret this as due to significant contamination from emission of the host galaxies, as expected from the faint absolute magnitudes sampled by our survey.

Abstract Copyright: ∼

Journal keyword(s): catalogs - surveys - galaxies: active - galaxies: Seyfert - quasars: general

VizieR on-line data: <Available at CDS (J/A+A/457/79): tablea1.dat tablea2.dat>

Nomenclature: Tables A3-A4: VVDS HHNNNNNNN N=62+18+38.

CDS comments: Tables A1-A2: In CDFS objects are designated as VCDFS NNNNN in SIMBAD.

Simbad objects: 131

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Number of rows : 131
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 SDSS J022525.68-043509.8 QSO 02 25 25.6923247704 -04 35 09.801425364   21.120 20.945 20.948 20.655 ~ 19 0
2 HSCS J022527-042631 QSO 02 25 27.229 -04 26 31.26   23.334 21.784 21.445 21.148 ~ 8 0
3 DES J022528.07-043642.0 Sy1 02 25 28.07 -04 36 41.9   23.616 23.607 23.261 23.237 ~ 7 0
4 VVDS 020147295 Sy1 02 25 29.1935 -04 40 44.158   23.865 23.436 22.843 22.589 ~ 6 0
5 2XLSSd J022532.4-043823 QSO 02 25 32.47 -04 38 19.1   23.922 23.456 23.205 23.109 ~ 7 0
6 VVDS 020179116 QSO 02 25 34.9833 -04 36 16.464   25.183 23.944 23.839 23.891 ~ 5 0
7 SDSS J022545.00-043736.2 QSO 02 25 45.003 -04 37 36.24   24.667 22.955 22.643 22.143 ~ 13 0
8 SDSS J022545.53-043445.6 Sy1 02 25 45.539 -04 34 45.64   21.986 21.551 21.643 21.330 ~ 15 0
9 HSCS J022548-041028 Sy1 02 25 48.97 -04 10 28.2   23.246 22.979 23.044 22.540 ~ 7 0
10 SDSS J022550.38-043324.5 QSO 02 25 50.38 -04 33 24.6   21.949 22.097 21.727 21.914 ~ 12 0
11 DES J022557.38-042846.3 Sy1 02 25 57.38 -04 28 46.3   23.919 23.534 23.059 22.431 ~ 8 0
12 SDSS J022557.39-041339.9 Sy1 02 25 57.3978272736 -04 13 39.895420224   20.602 20.390 20.316 19.834 ~ 20 0
13 SDSS J022608.39-043143.4 QSO 02 26 08.392 -04 31 43.42   22.909 22.273 22.018 21.458 ~ 13 0
14 SDSS J022608.70-041634.6 Sy1 02 26 08.7112158024 -04 16 34.580670060   21.518 21.143 20.961 20.844 ~ 12 0
15 SDSS J022609.63-042437.9 QSO 02 26 09.6362656344 -04 24 37.994067756   20.562 20.598 20.754 20.588 ~ 16 0
16 VIDEO J022612.28-042251.83 Sy1 02 26 12.29 -04 22 51.8   25.059 24.386 24.066 23.927 ~ 6 0
17 VIDEO J022617.49-043029.56 QSO 02 26 17.493 -04 30 29.32   21.183 21.052 20.939 20.654 ~ 9 0
18 SDSS J022617.79-043908.7 Sy1 02 26 17.798 -04 39 08.79   22.815 22.155 21.993 21.406 ~ 10 0
19 SDSS J022620.02-042554.6 Sy1 02 26 20.026 -04 25 54.57   24.446 23.842 23.461 22.742 ~ 7 0
20 SDSS J022622.16-042221.8 QSO 02 26 22.1708989728 -04 22 21.866787660   19.285 19.114 19.053 18.507 ~ 26 0
21 SDSS J022624.65-042002.3 QSO 02 26 24.654 -04 20 02.35   21.417 21.262 21.341 21.008 ~ 13 0
22 VIDEO J022625.93-042112.99 Sy1 02 26 25.93 -04 21 13.0   24.785 24.536 24.131 23.251 ~ 6 0
23 VIDEO J022626.02-042928.27 Sy1 02 26 26.03 -04 29 28.3   23.723 23.314 23.147 22.688 ~ 6 0
24 SDSS J022629.61-044914.6 Sy1 02 26 29.617 -04 49 14.61   22.977 21.968 21.432 20.965 ~ 16 0
25 VVDS 020351846 QSO 02 26 30.8405 -04 13 26.089   25.054 23.706 23.238 22.800 ~ 5 0
26 DES J022631.22-042129.1 Sy1 02 26 31.22 -04 21 29.1   23.949 23.560 23.814 22.888 ~ 7 0
27 VIDEO J022634.72-041134.07 Sy1 02 26 34.72 -04 11 34.1   23.276 23.019 22.550 22.425 ~ 7 0
28 VIDEO J022635.93-042322.11 QSO 02 26 35.93 -04 23 22.1   24.623 23.012 22.870 22.893 ~ 7 0
29 VIDEO J022644.47-041917.28 QSO 02 26 44.47 -04 19 17.3   24.146 23.943 23.811 23.578 ~ 6 0
30 VIDEO J022645.19-043830.87 Sy1 02 26 45.20 -04 38 30.9   23.887 23.615 23.292 23.112 ~ 6 0
31 3XMM J022645.4-043616 QSO 02 26 45.4602277248 -04 36 15.642681264   21.089 19.318 19.026 18.144 ~ 16 0
32 SDSS J022646.98-041838.2 QSO 02 26 46.982 -04 18 38.28   21.293 21.561 21.051 21.132 ~ 19 0
33 VIDEO J022647.75-044204.30 Sy1 02 26 47.75 -04 42 04.3   24.577 24.140 24.163 23.777 ~ 6 0
34 SDSS J022647.88-043135.5 Sy1 02 26 47.883 -04 31 35.56   22.300 22.022 21.758 21.439 ~ 14 0
35 SDSS J022649.40-041153.7 Sy1 02 26 49.402 -04 11 53.71   22.939 22.739 22.247 21.737 ~ 13 0
36 VVDS 020469530 Sy1 02 26 49.9165 -04 15 17.440   24.685 24.351 24.277 23.496 ~ 5 0
37 VIDEO J022651.01-044256.72 QSO 02 26 51.02 -04 42 56.7   23.084 22.752 22.765 22.338 ~ 6 0
38 VIDEO J022653.86-043627.33 Sy1 02 26 53.86 -04 36 27.3   24.014 23.654 23.363 22.532 ~ 6 0
39 VIDEO J022654.51-044437.94 Sy1 02 26 54.52 -04 44 37.9   25.421 23.980 23.973 23.572 ~ 6 0
40 VIDEO J022658.99-042906.32 Sy1 02 26 58.99 -04 29 06.3   26.054 25.109 24.740 23.871 ~ 6 0
41 VIDEO J022659.17-041656.58 QSO 02 26 59.17 -04 16 56.6   25.219 23.960 23.798 23.588 ~ 7 0
42 VIDEO J022659.83-043812.89 Sy1 02 26 59.83 -04 38 12.9   24.701 24.039 23.784 23.088 ~ 6 0
43 SDSS J022659.89-044430.5 QSO 02 26 59.9006732808 -04 44 30.644209968   21.266 20.965 20.778 20.380 ~ 20 0
44 VVDS 020463196 Sy1 02 27 00.6477 -04 21 49.000   24.495 24.422 23.912 23.274 ~ 5 0
45 VIDEO J022700.96-044517.02 Sy1 02 27 00.97 -04 45 17.0   23.389 23.354 22.973 22.239 ~ 8 0
46 VIDEO J022702.13-043616.08 Sy1 02 27 02.13 -04 36 16.1   23.899 23.503 23.010 22.388 ~ 6 0
47 SDSS J022704.05-041710.8 QSO 02 27 04.057 -04 17 10.86   21.971 21.816 21.608 21.353 ~ 9 0
48 SDSS J022704.23-042337.8 Sy1 02 27 04.236 -04 23 37.89   23.497 22.920 22.414 21.601 ~ 6 0
49 VIDEO J022706.41-043014.70 Sy1 02 27 06.41 -04 30 14.7   24.651 24.261 23.735 23.071 ~ 6 0
50 SDSS J022706.43-041924.8 QSO 02 27 06.437 -04 19 24.87   21.769 21.313 20.988 21.090 ~ 17 0
51 SDSS J022707.54-043203.2 QSO 02 27 07.542 -04 32 03.25   21.031 20.899 20.637 20.413 ~ 14 0
52 SDSS J022709.82-043902.4 QSO 02 27 09.829 -04 39 02.43   22.726 22.407 22.439 21.971 ~ 10 0
53 VIDEO J022723.82-043232.07 Sy1 02 27 23.82 -04 32 32.1   24.773 24.363 24.520 23.873 ~ 6 0
54 VIDEO J022724.08-043356.12 Sy1 02 27 24.10 -04 33 56.1   24.193 23.612 23.849 23.382 ~ 8 0
55 SDSS J022729.23-043227.8 QSO 02 27 29.2355888088 -04 32 27.834526608   19.336 19.102 19.120 19.042 ~ 26 0
56 DES J022731.14-042823.0 QSO 02 27 31.1445 -04 28 22.830   23.651 23.125 23.135 22.898 ~ 6 0
57 SDSS J022731.32-043050.7 QSO 02 27 31.322 -04 30 50.71   22.913 22.392 22.533 22.186 ~ 8 0
58 VIDEO J022736.08-044442.41 Sy1 02 27 36.08 -04 44 42.4   23.816 23.441 23.295 22.857 ~ 6 0
59 SDSS J022736.94-042631.5 QSO 02 27 36.941 -04 26 31.60   20.760 20.840 20.849 20.661 ~ 14 0
60 SDSS J022740.00-042317.8 Sy1 02 27 40.002 -04 23 17.84   22.681 21.874 22.284 21.365 ~ 11 0
61 SDSS J022747.33-042753.7 Sy1 02 27 47.331 -04 27 53.79   22.019 21.710 21.595 21.289 ~ 8 0
62 HSCS J022753-042320 QSO 02 27 53.87 -04 23 20.4   25.249 23.879 23.603 23.551 ~ 7 0
63 VCDFS 17025 Sy1 03 31 54.3017 -27 53 49.583   24.7822 24.5125 23.9331 23.6992 ~ 5 0
64 CXOCDFS J033200.4-274320 Sy1 03 32 00.37 -27 43 20.0 22.76 22.7055 22.335 22.1283 22.2135 ~ 57 0
65 CXOCDFS J033202.5-274601 Sy1 03 32 02.45 -27 46 00.5   24.291 24.5944 22.425 23.7324 ~ 48 0
66 CANDELS UDS F160W J033218.24-275241.4 Sy1 03 32 18.2555 -27 52 41.418   24.5285 24.6214 24.102 24.2474 ~ 52 0
67 ACS-GC 90107861 AGN 03 32 25.095 -27 42 19.53   24.3342 23.8948 22.9388 22.1407 ~ 22 0
68 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
69 ACS-GC 90042521 Sy1 03 32 30.2159 -27 45 04.590 23.17 22.5984 22.2969 21.958 21.7127 ~ 71 0
70 ACS-GC 90042433 Sy1 03 32 37.45 -27 40 00.3   23.5237 22.9339 22.614 22.1550 ~ 53 0
71 ACS-GC 90043401 Sy1 03 32 38.1232741056 -27 39 45.158278032 20.89 20.9342 20.511 20.4095 20.6297 ~ 69 0
72 COMBO J0332433-274914 Sy1 03 32 43.25 -27 49 14.4 24.17 22.4055 22.6983 22.984 22.5427 ~ 74 0
73 VCDFS 31270 Sy1 03 32 57.7386 -27 43 50.119   23.8081 23.6459 23.4400 23.5179 ~ 5 0
74 [VV2006] J033259.8-274749 QSO 03 32 59.8499816688 -27 47 48.381054396 22.29 22.0936 21.6616 21.9181 21.9483 ~ 47 0
75 CXOCDFS J033303.7-274519 Sy1 03 33 03.64 -27 45 18.5   23.7809 23.2970 22.9775 22.7093 ~ 32 0
76 [VV2006] J100211.1+012227 QSO 10 02 11.1550256112 +01 22 28.370515872   19.79 19.62   19.86 ~ 29 0
77 SDSS J100248.13+012002.2 QSO 10 02 48.1357036416 +01 20 02.307797556   21.71 21.38   21.3449 ~ 5 0
78 VVDS J100257.37+012540.3 Sy1 10 02 57.3751 +01 25 40.381         21.0126 ~ 4 0
79 [VV2006] J100308.8+012316 QSO 10 03 08.7927767616 +01 23 16.600817904   21.47 20.92   20.3873 ~ 25 0
80 COSMOS2015 326082 Sy1 10 03 11.33 +01 47 01.6   22.200 22.299   21.4874 ~ 10 0
81 COSMOS2015 381287 Sy1 10 03 13.82 +01 52 14.1   24.826 24.503 22.9556 22.4294 ~ 7 0
82 COSMOS2015 210350 Sy1 10 03 27.3295 +01 35 50.907   22.1509 21.8116 21.6163 21.6284 ~ 4 0
83 SDSS J100330.34+013851.2 QSO 10 03 30.346 +01 38 51.21   21.4686 21.3776 21.3902 21.1320 ~ 4 0
84 SDSS J100346.32+011911.0 QSO 10 03 46.322 +01 19 11.06         21.1971 ~ 5 0
85 SDSS J100400.34+014045.2 QSO 10 04 00.343 +01 40 45.22   22.8159 22.0873 22.0067 21.6690 ~ 4 0
86 [VV2006] J100407.2+012038 QSO 10 04 07.2179211768 +01 20 38.990658408   20.60 20.48   20.5201 ~ 22 0
87 VVDS J100411.83+014006.4 Sy1 10 04 11.8366 +01 40 06.465   22.7088 21.9765 22.2622 21.9976 ~ 4 0
88 SDSS J100413.43+015340.6 QSO 10 04 13.4397825648 +01 53 40.590458916   20.2595 19.8839 19.8523 19.7769 ~ 4 0
89 VVDS J100425.14+013307.7 Sy1 10 04 25.1417 +01 33 07.738   23.1128 22.4865 22.4895 21.7168 ~ 4 0
90 SDSS J100432.05+015423.5 QSO 10 04 32.0503278840 +01 54 23.545891800   20.8077 20.5013 20.2237 19.8129 ~ 4 0
91 SDSS J100436.54+013005.6 QSO 10 04 36.548 +01 30 05.61   22.5104 21.9448 22.2170 22.4620 ~ 4 0
92 SDSS J100438.00+020924.2 QSO 10 04 38.0074849032 +02 09 24.307209252   20.5862 20.4008 20.4352 20.0796 ~ 14 0
93 SDSS J100446.68+012239.0 QSO 10 04 46.685 +01 22 39.05         21.5305 ~ 4 0
94 SDSS J221351.56+002500.9 QSO 22 13 51.569 +00 25 00.91         22.2813 ~ 4 0
95 SDSS J221353.81+004106.3 Sy1 22 13 53.8080 +00 41 06.896         22.1624 ~ 6 0
96 SDSS J221402.38+001349.0 Sy1 22 14 02.3928 +00 13 49.583 23.1862       22.3747 ~ 5 0
97 VVDS J221411.61+002129.1 Sy1 22 14 11.6117 +00 21 29.148 23.0193       21.9856 ~ 4 0
98 SDSS J221428.40+002731.8 QSO 22 14 28.404 +00 27 31.89         21.8753 ~ 4 0
99 SDSS J221434.82+001923.8 QSO 22 14 34.827 +00 19 23.96 21.7088 20.71 20.42   20.4536 ~ 26 0
100 SDSS J221443.22+001416.0 Sy1 22 14 43.23 +00 14 16.0 23.1306       22.2065 ~ 6 0
101 SDSS J221444.22+001002.1 Sy1 22 14 44.1674 +00 10 02.536 22.7966       21.1324 ~ 7 0
102 SDSS J221448.77+004116.3 QSO 22 14 48.778 +00 41 16.37         21.4703 ~ 4 0
103 SDSS J221502.72+000810.2 Sy1 22 15 02.7156 +00 08 10.557         22.0950 ~ 5 0
104 SDSS J221508.47+001403.7 Sy1 22 15 08.4787 +00 14 04.377 22.2925       21.1932 ~ 5 0
105 SDSS J221509.16+001641.7 QSO 22 15 09.162 +00 16 41.76         21.9310 ~ 4 0
106 2MASS J22150952+0036383 QSO 22 15 09.5226805032 +00 36 38.473363008   18.23 17.95   18.24 ~ 24 0
107 VVDS J221531.65+000418.3 Sy1 22 15 31.6586 +00 04 18.312         21.2349 ~ 4 0
108 2SLAQ J221532.40+004835.9 QSO 22 15 32.4220021296 +00 48 36.042136452         20.58 ~ 4 0
109 SDSS J221534.71+001841.7 Sy1 22 15 34.7021 +00 18 42.009 22.4579       22.0145 ~ 5 0
110 SDSS J221546.26+005058.0 QSO 22 15 46.264 +00 50 58.04 20.6073 20.84 20.80   20.4909 ~ 5 0
111 SDSS J221554.11+004054.8 QSO 22 15 54.114 +00 40 54.85         21.5189 ~ 4 0
112 SDSS J221556.67+001752.0 QSO 22 15 56.670 +00 17 52.02         22.2249 ~ 4 0
113 SDSS J221627.06+001401.9 QSO 22 16 27.068 +00 14 01.90 21.2659     21.2535 20.9086 ~ 6 0
114 QSO J2216+0013 QSO 22 16 44.017 +00 13 48.12     23.0947 21.8154 20.1849 ~ 39 0
115 VVDS J221649.04+002046.2 Sy1 22 16 49.0462 +00 20 46.267   23.7157 23.5144 22.8211 22.4114 ~ 4 0
116 VVDS J221656.10+005600.7 Sy1 22 16 56.1036 +00 56 00.768 23.8080       21.7479 ~ 4 0
117 SDSS J221705.53+001019.5 QSO 22 17 05.5282951200 +00 10 19.537804092 22.4857 20.7766 20.4906 19.7889 19.5686 ~ 12 0
118 SDSS J221710.43+000604.5 Sy1 22 17 10.438 +00 06 04.59 22.2221 22.5085 22.1588 21.6977 21.2436 ~ 9 0
119 SDSS J221734.46+003732.9 QSO 22 17 34.461 +00 37 32.96 22.8946 21.8870 21.7166 21.5981 21.2822 ~ 12 0
120 ALMA J221736.54+001622.7 QSO 22 17 36.538 +00 16 22.56 23.9106 22.4187 21.6993 21.3836 21.3640 ~ 32 0
121 CFHIZELS-SM14-115716 QSO 22 17 36.641 +00 10 05.37 21.2069 21.4978 21.2167 20.7960 20.7806 ~ 12 0
122 SDSS J221739.69+000652.4 QSO 22 17 39.706 +00 06 52.44 22.8879 22.2739 21.8451 21.1850 21.0449 ~ 13 0
123 VVDS J221746.43+003126.5 Sy1 22 17 46.4378 +00 31 26.576   24.5697 23.4317 22.2902 21.8214 ~ 4 0
124 SDSS J221748.62+005150.1 Sy1 22 17 48.6425 +00 51 50.394 22.5126       21.9408 ~ 5 0
125 VVDS J221800.41+004831.4 Sy1 22 18 00.4147 +00 48 31.414 23.2610 23.0330 22.5912 21.9523 21.7939 ~ 4 0
126 SDSS J221801.52+005319.5 QSO 22 18 01.52544 +00 53 19.5684         21.8174 ~ 4 0
127 SDSS J221805.78+000912.2 Sy1 22 18 05.777 +00 09 12.26 22.1932 22.0612 21.9696 21.3389 21.2664 ~ 10 0
128 VVDS J221813.40+004854.0 Sy1 22 18 13.4014 +00 48 54.046 24.4978 23.6419 22.7417 22.1409 21.9920 ~ 5 0
129 CXOMP J221814.2+002048 QSO 22 18 14.2063834032 +00 20 49.386915852 21.3220 21.0407 21.0602 20.7642 20.6624 ~ 15 0
130 SDSS J221829.04+002024.0 QSO 22 18 29.041 +00 20 24.06 22.6057 22.3164 22.0715 21.6862 21.6416 ~ 7 0
131 SDSS J221833.73+002709.2 QSO 22 18 33.7383003288 +00 27 09.244200780 21.2115 21.8932 21.4568 20.5700 20.5050 ~ 7 0

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