2018A&A...616L...4M

Query : 2018A&A...616L...4M

2018A&A...616L...4M - Astronomy and Astrophysics, volume 616L4-4 (2018/8-1)

The mass-metallicity relation of high-z type-2 active galactic nuclei.

MATSUOKA K., NAGAO T., MARCONI A., MAIOLINO R., MANNUCCI F., CRESCI G., TERAO K. and IKEDA H.

Abstract (from CDS):

The mass-metallicity relation (MZR) of type-2 active galactic nuclei (AGNs) at 1.2<z<4.0 is investigated by using high-z radio galaxies (HzRGs) and X-ray selected radio-quiet AGNs. We combine new rest-frame ultraviolet (UV) spectra of two radio-quiet type-2 AGNs obtained with FOCAS on the Subaru Telescope with existing rest-frame UV emission lines, i.e., CIVλ1549, HeIIλ1640, and CIIIλ1909, of a sample of 16 HzRGs and 6 additional X-ray selected type-2 AGNs, whose host stellar masses have been estimated in literature. We divided our sample in three stellar mass bins and calculated averaged emission-line flux ratios of CIVλ1549/HeIIλ1640 and CIIIλ1909/CIVλ1549. Comparing observed emission-line flux ratios with photoionization model predictions, we estimated narrow line region (NLR) metallicities for each mass bin. We found that there is a positive correlation between NLR metallicities and stellar masses of type-2 AGNs at z∼3. This is the first indication that AGN metallicities are related to their hosts, i.e., stellar mass. Since NLR metallicities and stellar masses follow a similar relation as the MZR in star-forming galaxies at similar redshifts, our results indicate that NLR metallicities are related to those of the host galaxies. This study highlights the importance of considering lower-mass X-ray selected AGNs in addition to radio galaxies to explore the metallicity properties of NLRs at high redshift.

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: evolution - galaxies: active - galaxies: nuclei - quasars: emission lines - quasars: general

CDS comments: Table A.1 WN J1338+3532 is WN B1336.0+3547 in SIMBAD.

Simbad objects: 81

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Number of rows : 81
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 [RLM94] 0003-019 rG 00 06 -01.6           ~ 7 0
2 LEDA 2822124 rG 00 18 55.3 +09 40 07           ~ 10 0
3 [DVR2000] WN J0040+3857 rG 00 40 56.23 +38 57 30.0           ~ 9 0
4 LEDA 2822340 rG 00 46 41.5 +11 02 53           ~ 9 0
5 NVSS J012142+132058 rG 01 21 42.695 +13 20 58.10           ~ 43 1
6 NVSS J012229+192339 rG 01 22 29.957 +19 23 38.45           ~ 15 1
7 NVSS J020242+014910 rG 02 02 43.0 +01 49 09           ~ 35 1
8 NVSS J020510+224250 rG 02 05 10.606 +22 42 49.68           ~ 34 1
9 PMN J0214-1158 rG 02 14 17.4 -11 58 47           ~ 63 1
10 NVSS J021725+183704 rG 02 17 25.78 +18 36 59.0           ~ 19 1
11 NVSS J030326+373341 rG 03 03 26.078 +37 33 41.43           ~ 12 1
12 NVSS J031156+153254 rG 03 11 56.89 +15 32 54.8           ~ 14 0
13 PKS J0312-1449 rG 03 12 46.3663 -14 49 51.490           ~ 31 1
14 PKS J0318-2535 rG 03 18 12.091 -25 35 09.37   23.6 23.8     ~ 81 2
15 [LBX2017] 42 Sy2 03 31 51.94 -27 53 27.2 26.57 25.14 25.38 24.74   ~ 62 0
16 CXOCDFS J033213.0-275238 Sy2 03 32 12.96 -27 52 36.5       24.040 23.899 ~ 52 0
17 ACS-GC 90045314 Sy2 03 32 14.42141 -27 51 10.7305   24.3772   24.246 23.3772 ~ 59 0
18 ACS-GC 90045885 Sy2 03 32 18.39 -27 50 55.3   24.8876 24.190 23.82 23.039 ~ 85 0
19 CXOCDFS J033218.9-275136 Sy2 03 32 18.8321 -27 51 35.476   25.15   24.51 25.128 ~ 83 0
20 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
21 [VV2006] J033229.9-275106 Sy2 03 32 29.8487 -27 51 05.879   27.5675 25.05 23.970 24.5370 ~ 101 0
22 NAME BzK 4892 Sy2 03 32 35.73 -27 49 16.2   25.681 27.798 25.00 24.645 ~ 89 0
23 ACS-GC 90041753 Sy2 03 32 37.75 -27 52 12.3   25.2146 24.717 24.68 24.1108 ~ 87 0
24 ACS-GC 90045073 Sy2 03 32 39.670 -27 48 50.60   27.3148   25.18 24.512 ~ 108 0
25 GLEAM J034044-650705 QSO 03 40 44.6 -65 07 12           ~ 17 1
26 [RLM94] 0355-037 rG 03 58 -03.6           ~ 9 0
27 PMN J0419-1801 rG 04 19 43.7 -18 01 55           ~ 20 1
28 NVSS J045114+091430 rG 04 51 14.473 +09 14 30.87           ~ 18 1
29 LEDA 2824392 QSO 05 30 25.51 -54 54 23.2           ~ 50 2
30 4C 41.17 rG 06 50 52.098 +41 30 30.53           ~ 349 1
31 3C 183 rG 07 35 22.4525276184 +43 44 25.041453720           ~ 56 1
32 NVSS J075101+131923 rG 07 51 01.115 +13 19 27.66           ~ 20 1
33 NVSS J083053+191314 rG 08 30 53.507 +19 13 15.49           ~ 74 1
34 [STS2002] 52 AGN 08 48 38.0 +44 53 53       24.220   ~ 32 0
35 PKS 0851-14 rG 08 53 48.96852 -14 27 51.6136           ~ 27 1
36 NVSS J092022-071217 rG 09 20 22.412 -07 12 17.85       22.4   ~ 17 1
37 GLEAM J092419-220140 QSO 09 24 19.92000 -22 01 41.4984       25.850   ~ 90 1
38 [DVR2000] TN J0941-1628 rG 09 41 07.43 -16 28 02.5           ~ 11 0
39 PMN J0945-2429 rG 09 45 32.6 -24 28 50           ~ 101 1
40 ACS-GC 20183048 Sy1 09 59 01.29 +02 44 18.8 27.71 25.04 23.02 23.21 22.97 ~ 31 0
41 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
42 XMMC 10690 QSO 10 02 23.31 +02 25 58.2         24.875 ~ 15 0
43 4C 05.41 rG 10 19 33.424 +05 34 34.83   20.0       ~ 46 1
44 NVSS J103310-133952 rG 10 33 10.681 -13 39 53.63           ~ 13 1
45 NVSS J110247-165134 Rad 11 02 46.976 -16 51 33.96           ~ 13 1
46 LEDA 2826674 QSO 11 16 14.71 -18 06 29.9           ~ 25 1
47 3C 256 rG 11 20 43.022 +23 27 55.21   21.5       ~ 123 1
48 B2 1121+31 B Rad 11 23 55.85 +31 41 26.1           ~ 21 0
49 PKS J1140-2628 rG 11 40 48.35884 -26 29 08.6316     22.00     ~ 325 1
50 [RLM94] 1140-114 Rad 11 43 -11.7           ~ 2 0
51 4C 26.38 rG 12 32 23.63 +26 04 07.0           ~ 22 1
52 NVSS J125100+110420 rG 12 51 00.063 +11 04 20.21           ~ 16 1
53 NVSS J133814+353206 rG 13 38 14.922 +35 32 08.85           ~ 14 1
54 4C 24.28 rG 13 48 14.890 +24 15 50.34     17.7     ~ 48 1
55 MITG J1401+0921 rG 14 01 18.32 +09 21 23.6           ~ 10 0
56 3C 294 rG 14 06 44.317 +34 11 30.19           ~ 234 1
57 4C -00.54 rG 14 13 15.65 -00 23 07.4           ~ 52 1
58 PKS 1422-29 rG 14 25 29.27313 -29 59 55.8235   17.5       ~ 30 1
59 [RLM94] 1425-148 Rad 14 28 41.70 -15 02 28.4           ~ 8 1
60 87GB 143641.3+154403 QSO 14 39 04.925 +15 31 18.29           ~ 23 1
61 NVSS J154817-233701 rG 15 48 17.5 -23 37 05           ~ 21 1
62 3C 324.0 Sy1 15 49 49.170 +21 25 39.50   21.5       ~ 312 1
63 4C -00.62 rG 16 01 17.5 -00 28 47           ~ 75 1
64 PKS J1605-1734 rG 16 05 02.1072 -17 34 14.616           ~ 27 1
65 PMN J1650+0955 rG 16 50 05.166 +09 55 08.76           ~ 14 1
66 8C 1803+661 rG 18 03 50.851 +66 05 19.02           ~ 12 0
67 3C 372 rG 18 10 55.697 +40 45 23.63   22.1       ~ 70 1
68 [VV2000] J190249.3-232951 QSO 19 02 49.284 -23 29 51.26     20.82     ~ 32 1
69 4C 48.48 rG 19 33 05.267 +48 11 41.84           ~ 42 1
70 GLEAM J194100-195212 QSO 19 41 00.277 -19 52 13.96           ~ 11 1
71 LEDA 2830476 Sy1 20 27 59.395 -21 40 57.18   22.4       ~ 77 1
72 4C 02.51 rG 20 36 34.774 +02 56 54.30           ~ 16 1
73 PMN J2106-2404 rG 21 06 58.463 -24 05 06.11   23.0       ~ 79 2
74 4C 23.56 rG 21 07 15.080 +23 31 43.71           ~ 117 1
75 4C 03.49 rG 21 09 21.8155 +03 26 52.335           ~ 12 1
76 MITG J2121+1839 rG 21 21 25.44 +18 39 08.6           ~ 10 0
77 USS 2202+128 rG 22 05 14.100 +13 05 33.50           ~ 6 0
78 PKS J2253-0840 rG 22 53 40.4 -08 40 44           ~ 15 1
79 LEDA 2831610 rG 23 08 25.2 +03 37 04           ~ 14 1
80 4C 28.58 rG 23 51 59.232 +29 10 29.03           ~ 43 1
81 GLEAM J235254-615403 QSO 23 52 53.4 -61 53 44           ~ 10 1

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