2006A&A...453..525N


Query : 2006A&A...453..525N

2006A&A...453..525N - Astronomy and Astrophysics, volume 453, 525-533 (2006/7-2)

The correlation of narrow line emission and X-ray luminosity in active galactic nuclei.

NETZER H., MAINIERI V., ROSATI P. and TRAKHTENBROT B.

Abstract (from CDS):

We combine emission line and X-ray luminosities for 45 sources from the Chandra Deep Field South (CDF-S), and seven HELLAS sources, to obtain a new sample of 52 X-ray selected type-II active galactic nuclei (AGNs). Eighteen of our sources are very luminous with a typical, absorption-corrected 2-10keV luminosity of fewx1044erg/s (type-II QSOs). We compare the emission line properties of the new sources with emission line and X-ray luminosities of known low redshift, mostly lower luminosity AGNs by using a composite spectrum. We find that L[OIII]/L2–10 and L[OII]/L2–10 decrease with L(2-10keV) such that L[OIII]/L2–10∝L2–10–0.42. The trend was already evident, yet neglected in past low redshift samples. This lead to erroneous calibration of the line-to-X-ray luminosity in earlier AGN samples. The analysis of several type-I samples shows the same trend with a similar slope but a median L[OIII]/L2–10 which is larger by a factor of about two compared with optically selected type-II samples. We interpret this shift as due to additional reddening in type-II sources and comment in general on the very large extinction in many type-II objects and the significantly smaller average reddening of the SDSS type-II AGNs. The decrease of L[OIII]/L2–10 with L(2-10keV) is large enough to suggest that a significant fraction of high luminosity high redshift type-II AGNs have very weak emission lines that may have escaped detection in large samples. A related decrease of EW([OIII]λ5007) with optical continuum luminosity is demonstrated by an analysis of 12000 type-I SDSS AGNs. The new correlations found here are important for deriving accurate luminosity functions for AGNs and their neglect may explain past discrepancies between emission line and X-ray samples.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: Seyfert - quasars: emission lines - X-rays: galaxies

CDS comments: Table 1 objects CDF-S-NNN are [GZW2002] XID NNN in Simbad, objects HFFFFNNNN are HELLAS2XMM FFFFNNNN.

Simbad objects: 58

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Number of rows : 58
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 [VV2006] J003357.2-120038 Sy2 00 33 57.2 -12 00 38     21.80 21.8   ~ 8 0
2 HELLAS2XMM 15800062 Sy2 00 34 13.8 -11 56 00     23.30 23.3   ~ 6 0
3 [LBX2017] 32 AGN 03 31 50.41 -27 52 12.3       24.010 23.48 ~ 22 0
4 [SBH2004] XID 547a AGN 03 31 50.468 -27 52 36.66   28.12 27.70 24.450 25.82 ~ 15 0
5 [LBX2017] 42 Sy2 03 31 51.94 -27 53 27.2 26.57 25.14 25.38 24.74   ~ 59 0
6 [LBX2017] 49 QSO 03 31 52.472 -27 50 17.34   25.22 24.83 24.46 23.87 ~ 29 0
7 CXOCDFS J033155.4-275028 AGN 03 31 55.125 -27 50 27.98   25.66 24.97 23.77 22.11 ~ 19 0
8 [DSS2017] 1353 AGN 03 31 55.35 -27 54 48.2   22.07 21.65 20.712 20.00 ~ 31 0
9 [LBX2017] 97 AGN 03 32 01.285 -27 50 50.25   26.24 25.46 24.130 22.99 ~ 20 0
10 CANDELS UDS F160W J033203.04-274450.1 QSO 03 32 03.07 -27 44 50.1   26.9484   25.45 25.0739 ~ 42 0
11 ACS-GC 90046082 Sy2 03 32 03.66 -27 46 03.7   23.5861   20.778 20.2362 ~ 58 0
12 [LBX2017] 131 Sy2 03 32 04.85 -27 41 27.7   24.050   24.284 24.0258 ~ 32 0
13 ACS-GC 90043490 Sy2 03 32 07.98 -27 42 39.9   23.6922 23.2064 22.3383 21.8034 ~ 48 0
14 [VV2006] J033209.5-274807 QSO 03 32 09.4575891792 -27 48 07.049493144 22.94 21.4745 21.07 20.422 20.4857 ~ 61 0
15 ACS-GC 90045288 Sy2 03 32 11.4075 -27 46 49.973   23.8731 23.1241 22.070 21.423 ~ 51 0
16 ACS-GC 90044172 AGN 03 32 12.196 -27 45 30.11   24.6655 22.444 21.789 21.2217 ~ 46 0
17 CXOCDFS J033213.0-275238 Sy2 03 32 12.96 -27 52 36.5       24.040 23.899 ~ 47 0
18 ACS-GC 90045613 Sy2 03 32 13.257 -27 42 40.65   21.6424 20.820 20.164 19.8240 ~ 84 0
19 ACS-GC 90045746 Sy2 03 32 13.8495 -27 42 49.018   23.1221 22.348 21.8155 21.2325 ~ 62 0
20 [LBX2017] 260 Sy2 03 32 14.55 -27 54 21.1   25.65   25.47   ~ 33 0
21 ACS-GC 90045313 AGN 03 32 16.14982 -27 49 41.6993   21.553   21.322 20.476 ~ 49 1
22 ACS-GC 90041108 Sy2 03 32 17.16 -27 52 20.6   23.445   23.572 22.283 ~ 67 0
23 CXOCDFS J033218.9-275136 QSO 03 32 18.8321 -27 51 35.476   25.15   24.51 25.128 ~ 72 0
24 ACS-GC 90044373 Sy2 03 32 20.47022 -27 47 32.3484   22.743 23.88 24.752 21.863 ~ 51 0
25 CXOCDFS J033221.4-274231 Sy2 03 32 21.420 -27 42 31.17   23.3133 22.583 21.963 21.5742 ~ 40 0
26 CXOCDFS J033222.6-274950 Sy2 03 32 22.53830 -27 49 49.7903   23.498   22.006 22.332 ~ 38 0
27 ACS-GC 90042577 AGN 03 32 23.1571 -27 45 54.692   24.5179   23.81 22.846 ~ 34 0
28 ACS-GC 90044892 Sy2 03 32 24.9576 -27 50 08.048   25.7039   25.08 24.202 ~ 36 0
29 ACS-GC 90043946 Sy2 03 32 24.98108 -27 41 01.5074   23.4535   21.973 21.4414 ~ 44 0
30 ACS-GC 90041437 Sy2 03 32 25.1059 -27 50 43.256   24.8238   24.08 22.938 ~ 42 0
31 CANDELS UDS F160W J033225.68-274305.6 Sy2 03 32 25.74 -27 43 05.6   26.617 25.773 26.13 25.3679 ~ 70 0
32 CXOCDFS J033225.9-275508 AGN 03 32 25.8597 -27 55 06.400   24.086 23.728 23.718 22.801 ~ 31 0
33 ACS-GC 90044816 Sy2 03 32 26.7775 -27 41 45.721   24.1616 23.6837 22.515 21.8872 ~ 49 0
34 ACS-GC 90045964 Sy2 03 32 27.623 -27 41 44.91   24.0498 23.2945 22.252 21.6131 ~ 58 0
35 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2003 1
36 [LBX2017] 546 AGN 03 32 29.722 -27 51 45.54   27.255 27.831 23.440 26.669 ~ 22 0
37 [VV2006] J033229.9-275106 Sy2 03 32 29.8487 -27 51 05.879   27.5675 25.05 23.970 24.5370 ~ 93 0
38 CXOCDFS J033231.4-274727 AGN 03 32 31.356 -27 47 24.94 22.8607 22.5513 21.80 21.463 21.176 ~ 53 0
39 ACS-GC 90044174 AGN 03 32 35.842 -27 40 59.49   24.4130   22.471 21.7624 ~ 45 0
40 GOODS-MUSIC 13418 AGN 03 32 38.9 -27 44 39   25.544 25.322 24.340   ~ 9 1
41 CXOCDFS J033239.1-274440 AGN 03 32 39.052 -27 44 39.32   27.8340     26.304 ~ 41 1
42 ACS-GC 90045073 Sy2 03 32 39.670 -27 48 50.60   27.3148   25.18 24.512 ~ 93 0
43 ACS-GC 90042377 Sy2 03 32 41.714 -27 43 28.10   22.191   24.149 22.925 ~ 39 0
44 ACS-GC 90040004 AGN 03 32 44.01233 -27 54 54.1145   22.759 25.300 24.927 24.407 ~ 31 0
45 ACS-GC 90039808 Sy2 03 32 44.44 -27 49 39.8   25.4428 24.5909 23.8157 23.0180 ~ 58 0
46 CANDELS UDS F160W J033244.60-274835.9 QSO 03 32 44.599 -27 48 35.88   25.6176   25.070 24.7295 ~ 46 0
47 [LBX2017] 834 AGN 03 32 45.75122 -27 42 12.7105   21.009 22.95 22.349 20.78 ~ 21 0
48 CXOCDFS J033247.1-274346 Sy2 03 32 46.97 -27 43 46.6   23.592   23.683 22.612 ~ 39 0
49 2XMM J033247.8-274232 QSO 03 32 47.886 -27 42 32.82   22.51 22.12 21.65 20.51 ~ 44 0
50 ATCDFS9 J033249.19-274050.7 AGN 03 32 49.21541 -27 40 50.3803   22.613 23.0872 22.61 21.5187 ~ 49 0
51 [LBX2017] 937 AGN 03 32 59.762 -27 46 26.24   22.10 21.41 20.351 19.83 ~ 30 0
52 CXOCDFS J033309.3-274449 AGN 03 33 09.24 -27 44 49.5   23.6026 23.2116 22.360 21.4437 ~ 25 0
53 HELLAS2XMM 05370123 Sy1 05 38 51.5 -28 39 49     23.10 23.1   ~ 7 0
54 HELLAS2XMM 05370016 Sy2 05 39 09.4 -28 41 45     21.70 21.7   ~ 6 0
55 HELLAS2XMM 05370164 Sy2 05 39 17.1 -28 38 17     23.60 23.6   ~ 5 0
56 HELLAS2XMM 05370043 Sy2 05 40 22.1 -28 31 40     22.70 22.7   ~ 8 0
57 NGC 3783 Sy1 11 39 01.7096819040 -37 44 19.009642992   12.46 13.43 11.33 12.1 ~ 1587 0
58 HELLAS2XMM 50900013 Sy2 20 43 49.5 -10 32 40     23.20 23.2   ~ 7 0

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2023.02.04-09:48:07

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