2005AJ....130..387S

Query : 2005AJ....130..387S

2005AJ....130..387S - Astron. J., 130, 387-405 (2005/August-0)

Soft X-ray and ultraviolet emission relations in optically selected AGN samples.

STRATEVA I.V., BRANDT W.N., SCHNEIDER D.P., VANDEN BERK D.G. and VIGNALI C.

Abstract (from CDS):

Using a sample of 228 optically selected active galactic nuclei (AGNs) in the 0.01-6.3 redshift range with a high fraction of X-ray detections (81%-86%), we study the relation between rest-frame UV and soft X-ray emission and its evolution with cosmic time. The majority of the AGNs in our sample (155 objects) have been selected from the Sloan Digital Sky Survey (SDSS) in an unbiased way, rendering the sample results representative of all SDSS AGNs. The addition of two heterogeneous samples of 36 high-redshift and 37 low-redshift AGNs further supports and extends our conclusions. We confirm that the X-ray emission from AGNs is correlated with their UV emission and that the ratio of the monochromatic luminosity emitted at 2 keV compared to 2500 Å decreases with increasing luminosity (αox=-0.136lUV+2.616, where lUV is in log units) but does not change with cosmic time. These results apply to intrinsic AGN emission, as we correct or control for the effects of the host galaxy, UV/X-ray absorption, and any X-ray emission associated with radio emission in AGNs. We investigate a variety of systematic errors and can thereby state with confidence that (1) the αox-lUV anticorrelation is real and not a result of accumulated systematic errors and (2) any αox dependence on redshift is negligible in comparison. We provide the best quantification of the αox-lUV relation to date for normal radio-quiet AGNs; this should be of utility for researchers pursuing a variety of studies.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active - Galaxies: Evolution - Galaxies: Nuclei - Methods: Statistical - Ultraviolet: Galaxies - X-Rays: Galaxies

VizieR on-line data: <Available at CDS (J/AJ/130/387): table1.dat>

Simbad objects: 156

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Number of rows : 156
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 QSO B0123-0034 QSO 01 26 02.2069043568 -00 19 24.183775020   19.16 18.90     ~ 40 0
2 [VV98] J021000.1-100354 Bla 02 10 00.2224081752 -10 03 54.294343812   19.65 19.48 19.8   ~ 49 1
3 SDSS J022225.48-090258.5 Sy1 02 22 25.4846688624 -09 02 58.554283560   19.36 18.96     ~ 10 0
4 2MASX J02222615-0857023 Sy1 02 22 26.1258269544 -08 57 01.338453324   19.10 18.52 16.98   ~ 29 0
5 [VV2006] J022356.3-085707 QSO 02 23 56.3067308208 -08 57 07.859557332   19.81 19.54     ~ 26 0
6 [VV2006] J022435.9-090001 QSO 02 24 35.9218161504 -09 00 01.418675580   19.75 19.53     ~ 25 0
7 2MASS J02330595+0038565 Sy2 02 33 05.9648347584 +00 38 56.480426592   19.73 19.10     ~ 10 0
8 [VV2006] J023306.2+004614 QSO 02 33 06.2497631400 +00 46 14.516348880   20.50 20.36     ~ 31 0
9 [VV2006] J023325.3+002914 QSO 02 33 25.3301081688 +00 29 14.867420964   18.68 18.57     ~ 36 0
10 [VV2006] J023333.2+010333 QSO 02 33 33.2377202424 +01 03 32.977511712   18.87 18.61     ~ 35 0
11 [VV2006] J023359.7+004938 QSO 02 33 59.7210123312 +00 49 38.473525236   17.98 17.80     ~ 40 0
12 1WGA J0234.2+0057 Sy1 02 34 14.5731096312 +00 57 07.963861500   19.92 19.49     ~ 14 0
13 QSO B0251-0001B QSO 02 53 56.0802764640 +00 10 57.350032680   19.76 19.55     ~ 40 0
14 QSO B0251-0004 QSO 02 54 22.8600795312 +00 07 58.838567628   20.49 20.08     ~ 35 0
15 [VV2006] J025438.4+002132 QSO 02 54 38.3704100280 +00 21 32.690066724   20.13 19.87     ~ 44 0
16 2SLAQ J025501.18+001745.4 Sy1 02 55 01.1888741928 +00 17 45.432179448   19.79 19.42     ~ 14 0
17 US 3333 QSO 02 55 05.6785183392 +00 25 23.030624640   18.09 17.90     ~ 49 0
18 [VV2006] J025510.6-000713 QSO 02 55 10.5553055472 -00 07 13.052400492   20.44 20.20     ~ 36 0
19 QSO B0252-0005 QSO 02 55 13.0345513296 +00 06 39.427249716   19.59 19.49     ~ 55 0
20 2SLAQ J025525.66+002109.7 Sy1 02 55 25.6714607784 +00 21 09.800399304   20.84 20.58     ~ 20 0
21 QSO B0252-0014 QSO 02 55 28.9334212680 -00 02 19.200152688   19.76 19.43     ~ 41 0
22 [VV2006] J025556.0+001457 QSO 02 55 56.0038058112 +00 14 57.388671636   19.78 19.61     ~ 28 0
23 [VV2006] J073405.3+320315 QSO 07 34 05.2501966728 +32 03 15.362316432   20.38 20.14     ~ 28 0
24 [VV2006] J075751.7+374554 QSO 07 57 51.7297686984 +37 45 54.312747408   18.91 18.61     ~ 27 0
25 [VV2000] J075820.9+375533 QSO 07 58 21.0127107336 +37 55 33.215207628   19.74 19.48     ~ 29 0
26 [VV2006] J075825.8+374628 QSO 07 58 25.8706964256 +37 46 28.871227416   20.53 20.23     ~ 25 0
27 1WGA J0813.0+4557 Sy1 08 13 03.8736713448 +45 57 13.397599440   20.16 19.74     ~ 7 0
28 [VV2006] J081339.4+460341 QSO 08 13 39.3767531904 +46 03 41.368016484   18.80 18.52     ~ 31 0
29 2MASS J08471602+3732182 Sy1 08 47 16.0432340520 +37 32 18.032278992   18.62 18.51     ~ 74 0
30 [VV2006] J084745.9+375359 QSO 08 47 45.8833658376 +37 53 59.077050684   18.71 18.56     ~ 29 0
31 2E 2051 Sy1 08 48 18.9321183912 +37 40 09.038747352   18.38 18.16     ~ 45 0
32 [VV2006] J084824.8+373114 QSO 08 48 24.7495731840 +37 31 14.047183632   19.41 19.19     ~ 24 0
33 [VV2006] J084834.3+372334 QSO 08 48 34.3078176624 +37 23 34.059561468   19.47 19.30     ~ 27 0
34 [VV2006] J084838.6+374541 QSO 08 48 38.5840188768 +37 45 41.771788524   19.19 18.99     ~ 27 0
35 [VV2006] J084905.1+445715 QSO 08 49 05.0720835432 +44 57 14.726399724   20.79 20.38 19.540   ~ 44 0
36 2MASS J09091161+5409523 Sy1 09 09 11.6224576176 +54 09 52.537786740   18.52 18.07     ~ 18 0
37 SDSS J090926.65+424228.6 Sy1 09 09 26.6519098392 +42 42 28.619022672   18.89 18.56     ~ 36 0
38 [VV2006] J091006.3+430859 Sy1 09 10 06.2550415080 +43 08 59.272787760   19.36 19.23     ~ 26 0
39 [VV2006] J091023.2+424554 QSO 09 10 23.1685207416 +42 45 54.868222800   19.09 18.83     ~ 26 0
40 [VV2006] J091029.0+542718 QSO 09 10 29.0305494480 +54 27 19.024472412   18.86 18.81 18.480   ~ 50 0
41 [VV2006] J093259.0+550433 QSO 09 32 58.9877328919 +55 04 33.500840107   20.68 20.41     ~ 26 0
42 [VV2006] J093359.4+551550 QSO 09 33 59.3431475520 +55 15 50.704610976   19.47 19.26     ~ 48 0
43 [VV2006] J093530.1+613650 QSO 09 35 30.0691083528 +61 36 49.983794748   18.22 17.94     ~ 27 0
44 [VV2006] J093531.3+612902 QSO 09 35 31.2349285008 +61 29 02.076024552   19.88 19.68     ~ 37 0
45 [VV2006] J093639.1+611918 QSO 09 36 39.1242412896 +61 19 18.171160356   19.55 19.23     ~ 30 0
46 [VV2006] J094231.9+471121 QSO 09 42 31.9190845992 +47 11 21.368229252   19.34 19.28     ~ 32 0
47 US 886 QSO 09 43 45.2121143328 +46 51 54.764615412   18.63 18.39 18.10   ~ 38 0
48 [VV2006] J100909.2+535101 QSO 10 09 09.2146577208 +53 51 02.365322400   19.58 19.46     ~ 31 0
49 [VV2000] J100921.8+534924 QSO 10 09 21.8992979016 +53 49 25.707995904   20.04 19.57     ~ 35 0
50 [VV2000] J100926.7+533424 QSO 10 09 26.7491448120 +53 34 24.319893540   19.53 19.44     ~ 45 0
51 LEDA 3095920 Sy1 10 09 46.0040276784 +52 34 41.129246352   18.98 18.62     ~ 19 0
52 [VV2000] J101037.4+523721 QSO 10 10 37.4704782096 +52 37 22.406444904   19.0 19.21 18.9   ~ 29 0
53 [VV2006] J101644.3+592134 QSO 10 16 44.2483074768 +59 21 34.565898960   19.40 19.05     ~ 26 0
54 [VV2006] J101730.6+593042 QSO 10 17 30.6169017120 +59 30 42.250734288   20.82 20.45     ~ 22 0
55 [VV2006] J101737.8+592227 QSO 10 17 37.7401603080 +59 22 27.686963784   18.75 18.52     ~ 29 0
56 [VV2006] J101750.2+592802 QSO 10 17 50.1741763032 +59 28 03.166810644   19.61 19.34     ~ 31 0
57 [VV2006] J101757.5+592108 QSO 10 17 57.4492408320 +59 21 08.840170944   20.60 20.41     ~ 25 0
58 [VV2006] J101811.8+593928 QSO 10 18 11.7434055072 +59 39 28.537608528   20.33 19.97     ~ 23 0
59 QSO J1019+5246 QSO 10 19 39.1675648704 +52 46 27.866425152   18.39 18.14     ~ 39 0
60 [VV2006] J101943.8+525721 QSO 10 19 43.7296690248 +52 57 21.234496104   19.64 19.29     ~ 27 0
61 [VV2006] J102023.3+524509 QSO 10 20 23.3023407504 +52 45 09.945349344   19.94 19.63     ~ 29 0
62 2QZ J103703.0-001855 Sy1 10 37 03.0958433496 -00 18 54.895393692   20.18 19.72     ~ 15 0
63 [VV2006] J103709.8+000235 QSO 10 37 09.8061526512 +00 02 35.153731536   21.06 20.71     ~ 17 0
64 [VV2006] J103747.4-001643 QSO 10 37 47.4149233824 -00 16 44.018357232   20.31 19.88     ~ 26 0
65 [VV2006] J104723.5+540406 Sy1 10 47 23.5273985424 +54 04 06.904083000   19.34 19.02     ~ 29 0
66 [VV98] J105239.6+572432 QSO 10 52 39.5958253296 +57 24 31.425574788   18.39 18.07     ~ 76 0
67 [VV2006] J110205.7+603836 QSO 11 02 05.6631969336 +60 38 36.613200552   19.14 19.10     ~ 24 0
68 [VV2006] J110250.1+605625 QSO 11 02 50.0486436504 +60 56 25.717537176   19.06 18.93     ~ 28 0
69 [VV2006] J110307.8+605218 QSO 11 03 07.8138546312 +60 52 17.664444804   20.88 20.52     ~ 21 0
70 SDSS J110308.84+604746.4 QSO 11 03 08.8329732264 +60 47 46.443449904   20.67 20.37     ~ 21 0
71 [VV2006] J110349.8+610412 QSO 11 03 49.8316074864 +61 04 12.617126148   20.39 20.14     ~ 21 0
72 [VV2006] J113219.6+635346 QSO 11 32 19.6583437560 +63 53 46.892732136   20.68 20.53     ~ 23 0
73 [VV2006] J113634.9+610620 QSO 11 36 34.9402414680 +61 06 20.458219428   20.88 20.79     ~ 28 1
74 [VV2006] J113829.0+611020 QSO 11 38 29.0958809784 +61 10 21.168380640   19.81 19.46     ~ 23 0
75 Mrk 1310 Sy1 12 01 14.3530384560 -03 40 41.015051940   16.31 15.89 14.780   ~ 218 0
76 [VV2006] J120329.6-034410 QSO 12 03 29.6230155744 -03 44 10.676054940   19.50 19.15     ~ 22 0
77 [VV2006] J120353.9-033302 QSO 12 03 53.9146663848 -03 33 02.497642956   19.11 18.93     ~ 24 0
78 [VV2006] J120415.2-033429 QSO 12 04 15.2222623536 -03 34 29.428098888   20.69 19.91     ~ 23 0
79 NGC 4073 BiC 12 04 27.0598775760 +01 53 45.611893752   13.8 13.21 14.249   ~ 211 1
80 [VV2006] J120431.4-033115 QSO 12 04 31.3727420784 -03 31 15.575441592   19.33 19.12     ~ 23 0
81 [VV2006] J120450.6+022118 QSO 12 04 50.6160932808 +02 21 18.523890756   20.59 20.32     ~ 27 0
82 2MASS J12045289-0326259 Sy1 12 04 52.8984663216 -03 26 26.015498880   18.60 18.34     ~ 24 0
83 [VV2006] J120523.6-033618 QSO 12 05 23.6785399008 -03 36 18.299249964   19.97 19.55     ~ 22 0
84 [VV2006] J120543.0+014826 QSO 12 05 42.9931198560 +01 48 27.161610624   19.28 19.06     ~ 30 0
85 [VV2006] J120630.3+015808 QSO 12 06 30.3488706744 +01 58 08.269290228   21.24 20.96     ~ 21 0
86 [VV2006] J121836.0+054628 QSO 12 18 36.0884516808 +05 46 28.167953916   19.48 19.15     ~ 35 0
87 [VV2006] J121925.9+041012 QSO 12 19 25.8314690736 +04 10 12.919968588   19.45 19.25     ~ 27 0
88 [VV2006] J121942.5+034530 QSO 12 19 42.4838034432 +03 45 30.293089020   18.7 19.21 18.5   ~ 30 0
89 2MASX J12194890+0545311 Sy1 12 19 48.9358842216 +05 45 31.675064400   18.95 18.41     ~ 25 0
90 [VV2006] J121955.3+034103 QSO 12 19 55.2534757920 +03 41 03.954918228   20.11 19.96     ~ 24 0
91 2XMM J122656.4+013124 Sy2 12 26 56.4794393928 +01 31 24.288763800   21.37 20.72     ~ 40 0
92 [VV2006] J122723.6+014805 QSO 12 27 23.6525064960 +01 48 05.978640312   21.36 20.81     ~ 24 0
93 2QZ J122724.5+013930 Sy1 12 27 24.5858302248 +01 39 30.452915196   19.92 19.47     ~ 12 0
94 [VV2006] J122742.9+013438 QSO 12 27 42.9862254192 +01 34 38.422770420   19.42 19.05     ~ 29 0
95 [VV2006] J122805.6+014119 QSO 12 28 05.5832260296 +01 41 19.169168316   18.28 18.05     ~ 30 0
96 [VV2006] J123514.9+004740 QSO 12 35 14.9477594184 +00 47 40.671471984   20.08 19.68     ~ 29 0
97 [VV2006] J123552.7+005029 QSO 12 35 52.7467733400 +00 50 29.647150728   19.39 19.25     ~ 34 0
98 [VV2006] J123659.9+004211 QSO 12 36 59.8995877200 +00 42 12.173509728   19.06 18.95     ~ 35 0
99 [VV2006] J123729.8+005433 QSO 12 37 29.7489374976 +00 54 33.674641848   19.40 19.10     ~ 34 0
100 [VV2006] J124214.1+024224 QSO 12 42 14.0679662640 +02 42 24.107255388   19.59 19.43     ~ 29 0
101 SDSS J124219.16+023118.3 QSO 12 42 19.1685162432 +02 31 18.265035360   19.42 19.29     ~ 26 0
102 LBQS 1239+0249 QSO 12 42 20.0836992696 +02 32 57.594739092   18.46 18.31     ~ 45 0
103 LBQS 1240+0246 QSO 12 42 44.5857979776 +02 29 54.377170692   17.93 17.67     ~ 41 0
104 [VV2006] J124255.3+024957 QSO 12 42 55.3172310768 +02 49 56.935644492   19.64 19.39     ~ 35 0
105 2MASX J12431998+0252562 Sy1 12 43 19.9831287432 +02 52 56.177763420   18.42 17.86     ~ 23 0
106 [VV2006] J124520.7-002128 QSO 12 45 20.7231456600 -00 21 28.209932136   21.26 20.76     ~ 33 0
107 LBQS 1242+0006 QSO 12 45 24.5992660656 -00 09 38.017515636   18.30 18.08     ~ 70 0
108 LBQS 1243-0011 QSO 12 45 40.9941953712 -00 27 44.864241876   18.97 18.75     ~ 49 0
109 [VV2006] J124555.1-003736 QSO 12 45 55.1180282832 -00 37 35.437464804   18.89 18.61     ~ 36 0
110 LBQS 1308-0111 QSO 13 10 55.5862850016 -01 27 24.500246544   19.19 18.70 18.51 18.45 ~ 43 0
111 [VV2006] J131131.0-010331 QSO 13 11 31.0326301416 -01 03 32.334426972   19.06 18.71     ~ 28 0
112 [VV2006] J131208.7-010710 QSO 13 12 08.6859367440 -01 07 10.074490644   19.44 19.15     ~ 31 0
113 [VV2006] J132948.6-020027 QSO 13 29 48.5186604120 -02 00 28.387057680   19.23 18.86     ~ 29 0
114 [VV2006] J133027.6-014202 QSO 13 30 27.5103132456 -01 42 03.211697772   19.55 19.12     ~ 30 0
115 [VV2006] J133102.6-015013 QSO 13 31 02.5361794992 -01 50 14.525263500   19.54 19.35     ~ 27 0
116 [VV2006] J133111.4-020611 QSO 13 31 11.2693536864 -02 06 12.254872248   19.69 19.51     ~ 25 0
117 [VV2006] J133135.2-014429 QSO 13 31 35.2017386880 -01 44 30.274299168   19.13 18.91     ~ 29 0
118 [VV2006] J133139.4-020601 QSO 13 31 39.3135918480 -02 06 02.123597664   19.39 19.09     ~ 24 0
119 2dFGRS TGN198Z132 Sy1 13 31 41.0263364688 -01 52 12.466987644   19.20 18.84     ~ 22 0
120 QSO B1339+0003 QSO 13 42 33.7085622576 -00 11 48.120706500   19.22 19.15     ~ 40 0
121 [VV96] J134325.8-001613 QSO 13 43 25.8412398744 -00 16 12.232787628   19.43 19.17     ~ 34 0
122 2dFGRS TGN336Z208 Sy1 13 43 51.0659006568 +00 04 34.703018328   17.76 17.40     ~ 30 1
123 [VV2006] J134425.9-000056 QSO 13 44 25.9507317600 -00 00 56.187446472   18.98 18.73     ~ 41 0
124 3XMM J134459.4-001559 Sy1 13 44 59.4488776152 -00 15 59.514719292   17.83 17.64     ~ 57 0
125 [VV2006] J135854.5+623913 QSO 13 58 54.4557288024 +62 39 13.198691016   19.03 18.68     ~ 25 0
126 [VV2006] J135932.3+623546 QSO 13 59 32.3177224128 +62 35 46.402452276   19.35 19.21     ~ 22 0
127 LEDA 3429995 Sy1 14 00 37.1231058168 +62 21 32.790233952   18.05 17.46     ~ 16 0
128 [VV2006] J140041.1+622515 QSO 14 00 41.1120072336 +62 25 16.201845084   20.09 19.88     ~ 30 0
129 [VV2006] J140045.0+621815 QSO 14 00 45.0031404264 +62 18 14.461212492   19.42 19.29     ~ 26 0
130 [VV2006] J141151.5+592349 QSO 14 11 51.4406483784 +59 23 49.175079216   18.0 18.72 17.7   ~ 26 0
131 [VV2006] J141218.5+585918 QSO 14 12 18.4977704616 +58 59 17.987670816   19.02 18.76     ~ 26 0
132 [VV2006] J141239.7+592131 QSO 14 12 39.7211366040 +59 21 31.452965280   18.8 19.16 18.9   ~ 26 0
133 [VV2006] J141241.6+585256 QSO 14 12 41.5137693864 +58 52 56.429643576   19.74 19.57     ~ 23 0
134 QSO B1505+5557 QSO 15 05 43.9013122920 +55 49 36.152781744   17.9 18.38 18.5   ~ 38 1
135 [VV2006] J150730.7+553710 QSO 15 07 30.6157772112 +55 37 10.943460624   25.00 22.46     ~ 28 0
136 [VV2006] J151453.9+561031 QSO 15 14 53.8652353128 +56 10 31.956903192   19.92 19.64     ~ 30 0
137 [VV98] J151510.1+562834 QSO 15 15 10.1058299352 +56 28 34.776162876   20.48 20.35     ~ 31 0
138 [VV2006] J151530.7+560132 Sy1 15 15 30.7035041016 +56 01 32.354034420   18.5 19.66 18.7   ~ 25 0
139 [VV2006] J163257.0+415828 QSO 16 32 56.9954934840 +41 58 28.990566768   19.65 19.28     ~ 24 0
140 SDSS J163337.44+420652.9 QSO 16 33 37.5340793568 +42 06 52.812303660   19.45 19.32     ~ 22 0
141 2MASS J16562734+6232267 Sy1 16 56 27.3133252560 +62 32 26.655949860   18.23 17.89     ~ 30 0
142 [VV2006] J165713.3+352439 QSO 16 57 13.2500696808 +35 24 39.335083848   19.64 19.50     ~ 40 0
143 [VV2006] J165739.8+350426 QSO 16 57 39.8292499248 +35 04 26.880958236   18.48 18.26     ~ 35 0
144 [VV2006] J165903.7+352423 QSO 16 59 03.6361021032 +35 24 23.502397536   20.69 20.25     ~ 22 0
145 HS 1700+6416 QSO 17 01 00.6194059368 +64 12 09.118892376   16.39 16.17     ~ 382 0
146 2E 3824 Sy1 17 03 55.7918446920 +60 45 11.766054168   19.47 19.02     ~ 32 0
147 QSO B1703+6051 QSO 17 04 06.1431288792 +60 47 53.841956568   18.89 18.55     ~ 40 0
148 8C 1704+608 Bla 17 04 41.3742408840 +60 44 30.520617000   15.65 15.40 15.30   ~ 782 1
149 [VV2006] J171224.5+331721 QSO 17 12 24.4942638624 +33 17 21.144205680   21.11 20.67     ~ 21 0
150 [VV2006] J215621.8+010330 QSO 21 56 21.8172985656 +01 03 30.641787972   18.86 18.48     ~ 26 0
151 SDSS J215647.11+010502.7 QSO 21 56 47.1150437712 +01 05 02.742278208   19.55 19.23     ~ 26 0
152 SDSS J230440.56-082220.8 QSO 23 04 40.5786686712 -08 22 20.854451748   20.15 19.57     ~ 6 0
153 SDSS J231304.32+135303.5 QSO 23 13 04.2711246144 +13 53 03.557951304   20.06 19.72     ~ 29 0
154 [VV2006] J231407.9+140736 QSO 23 14 07.9109 +14 07 36.499   22.02 21.10     ~ 25 0
155 PB 8081 QSO 23 54 19.6704478752 -10 07 18.538304988   18.72 18.53     ~ 28 0
156 1WGA J2355.0-1030 Sy1 23 55 00.8988220824 -10 31 01.269117876   20.21 19.55     ~ 8 0

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