1998ApJ...506..647S

Query : 1998ApJ...506..647S

1998ApJ...506..647S - Astrophys. J., 506, 647-657 (1998/October-3)

The difference between the narrow-line regions of Seyfert 1 and Seyfert 2 galaxies.

SCHMITT H.R.

Abstract (from CDS):

This paper presents a comparative study of emission-line ratios of the narrow-line regions (NLRs) of Seyfert 1 and Seyfert 2 galaxies. It includes a literature compilation of the emission-line fluxes [O II] λ3727, [Ne III] λ3869, [O III] λ5007, and [Ne V] λ3426 as well as 60 µm continuum flux, for a sample of 52 Seyfert 1 and 68 Seyfert 2 galaxies. The distribution of the emission-line ratios [O II]/[Ne III] and [O II]/[Ne V] shows that Seyfert 1 and Seyfert 2 galaxies are statistically different: Seyfert 1 galaxies have smaller values than Seyfert 2 galaxies, indicating a higher excitation spectrum. These and other emission-line ratios are compared with sequences of models that combine different proportions of matter and ionization-bounded clouds and also with sequences of models that vary only the ionization parameter. This comparison shows that the former models better reproduce the overall distribution of emission-line ratios, indicating that Seyfert 1 galaxies have a smaller number of ionization-bounded clouds than Seyfert 2 galaxies. This difference, together with other results available in the literature, are interpreted from the point of view of four different scenarios. The most likely scenario assumes that Seyfert 1 galaxies have smaller NLRs than Seyfert 2 galaxies, possibly due to a preferential alignment of the torus axis close to the host galaxy plane axis in Seyfert 1 galaxies.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Seyfert - Galaxies: Active - Galaxies: Nuclei

Simbad objects: 121

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Number of rows : 121
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 LEDA 126720 Sy1 00 00 53.5078455216 -44 39 33.477743628   17.19       ~ 13 0
2 LEDA 210 Sy2 00 03 10.0200133344 +04 44 56.261472756   17       ~ 27 0
3 ESO 111-22 EmG 00 15 16.4273264520 -57 14 40.860262896   15.15   13.63   ~ 25 0
4 NGC 262 Bla 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 778 2
5 LEDA 3458 Sy2 00 57 54.0338313648 +01 20 13.882713108   17.50 16.4     ~ 17 0
6 LEDA 3661 Sy2 01 01 20.4947896296 +06 54 51.311149776   17       ~ 10 0
7 LEDA 3938 Sy2 01 06 45.2603399520 +06 38 01.873274352   17       ~ 43 0
8 NGC 424 Sy1 01 11 27.6385025496 -38 05 00.421096524   13.76 14.12 12.38 12.8 ~ 346 1
9 Z 436-14 Sy1 01 13 51.0408870864 +13 16 18.204162240   15.65 14.95     ~ 127 0
10 NGC 449 Sy2 01 16 07.2105079530 +33 05 21.649015602   15.90 14.96     ~ 302 4
11 UM 103 Sy2 01 25 27.7857865222 +03 00 11.153997482   17       ~ 15 0
12 Z 459-57 Sy1 01 27 32.5217343720 +19 10 43.839069600   14.89 14.22     ~ 333 0
13 Z 386-35 Sy1 01 43 57.7777898304 +02 20 59.531401716   14.90 14.07     ~ 569 1
14 Z 412-46 Sy2 01 55 22.0278511032 +06 36 42.434344476   14.449 13.619 13.090 12.381 ~ 157 0
15 Z 387-34 Sy1 02 06 15.9896281128 -00 17 29.221733688   15.90 15.50 10.3   ~ 405 0
16 NGC 1019 Sy1 02 38 27.4157281584 +01 54 27.757234728   15.71 14.95     ~ 78 0
17 Z 414-40 Sy1 02 41 34.8722696928 +07 11 13.854403392   15.46 14.69     ~ 136 0
18 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
19 IC 1854 Sy1 02 49 20.6915840376 +19 18 14.440530996   15.86 14.81     ~ 119 0
20 Z 524-40 Sy2 02 59 58.5970307633 +36 49 13.808979663   14.89 13.96     ~ 369 1
21 2MASX J03040202+3123220 Sy1 03 04 01.9893556296 +31 23 21.959093148   16.5       ~ 20 0
22 NGC 1229 Sy2 03 08 10.8346520856 -22 57 36.937886004   14.87 14.45 13.86   ~ 90 0
23 Mrk 609 Sy2 03 25 25.3590639624 -06 08 37.947546528   14.72 14.12 10.9   ~ 212 0
24 Mrk 612 Sy2 03 30 40.866 -03 08 15.69   15.03 14.25     ~ 100 0
25 NGC 1358 Sy2 03 33 39.6807616872 -05 05 22.213915692   14.10 13.05 11.76   ~ 220 1
26 NGC 1386 Sy1 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 553 1
27 NGC 1409 Sy2 03 41 10.4682070631 -01 18 09.476001946   14.7       ~ 83 0
28 LEDA 74977 Sy1 03 45 12.5298087360 -39 34 29.275394988   15.55 14.83 14.531   ~ 56 0
29 Mrk 1193 Sy2 04 07 01.1082385944 -10 10 14.996256312   16.5       ~ 19 0
30 NGC 1566 Sy1 04 20 00.3968473248 -54 56 16.624708764 10.29 10.19 9.73 9.21 10.1 ~ 1051 2
31 NGC 1667 Sy2 04 48 37.1804579280 -06 19 11.824427712   13.66 12.86 11.72   ~ 384 2
32 2MASX J05161479-4131483 Sy2 05 16 14.79120 -41 31 48.3820           ~ 8 0
33 ESO 306-25 Sy2 05 45 51.0548454576 -39 29 39.345071244   14.95 14.9 13.53   ~ 25 0
34 NGC 2110 Sy2 05 52 11.3768668776 -07 27 22.507465392   14.77 13.51 11.86   ~ 712 1
35 Z 232-3 Sy1 05 54 53.6080860768 +46 26 21.624853488   15.37 14.62     ~ 563 3
36 Tol 0611-375 G 06 13 -37.5           ~ 1 0
37 Z 329-24 Sy2 06 15 36.2812259376 +71 02 14.837219808 14.21 14.03 12.97     ~ 960 2
38 IC 450 Sy1 06 52 12.3346265592 +74 25 37.121227716   15.16 14.19     ~ 619 1
39 Z 235-30 Sy1 07 42 32.8210670808 +49 48 34.783809768   14.74 14.27     ~ 769 1
40 Mrk 78 Sy2 07 42 41.7033384240 +65 10 37.447730076   15.57 14.58     ~ 386 3
41 Z 207-33 Sy2 08 07 40.9957797624 +39 00 15.247008108   14.90 14.08     ~ 190 0
42 Z 91-65 Sy1 09 18 25.9971991776 +16 18 19.633269600   14.82 14.20     ~ 293 0
43 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 951 3
44 MCG-05-23-016 Sy2 09 47 40.1332188528 -30 56 55.960779696   14.10 13.69 12.44   ~ 611 0
45 Z 7-49 Sy1 09 52 19.168 -01 36 44.10   14.99 14.39 11.2   ~ 348 1
46 NGC 3081 Sy2 09 59 29.5437024336 -22 49 34.747341960   13.06 13.55 11.67 12.1 ~ 509 0
47 NGC 3227 Sy1 10 23 30.5765149296 +19 51 54.282206700   12.61 11.79     ~ 1807 2
48 NGC 3281 Sy2 10 31 52.086 -34 51 13.40   12.62 14.02 11.17   ~ 392 1
49 MCG+10-15-104 Sy2 10 34 08.54424 +60 01 52.1004   15.71 14.65     ~ 271 1
50 NGC 3393 Sy2 10 48 23.4653152920 -25 09 43.487648784   13.10 13.95 11.67 12.2 ~ 471 1
51 NGC 3516 Sy1 11 06 47.4632200800 +72 34 07.298374656   13.12 12.40     ~ 1638 0
52 Z 185-66 Sy2 11 26 48.4988872152 +35 15 03.212861508   15.04 14.29     ~ 144 0
53 Mrk 176 Sy2 11 32 40.2448971432 +52 57 01.289256768   15.50 14.61 13.52   ~ 244 1
54 NGC 3783 Sy1 11 39 01.7096819040 -37 44 19.009642992   12.46 13.43 11.33 12.1 ~ 1765 1
55 NGC 3786 Sy2 11 39 42.5121341928 +31 54 33.971791752   14.62 13.74     ~ 413 1
56 APG 294 GrG 11 39.7 +31 55           ~ 260 0
57 Z 243-24 Sy2 11 53 41.7732361680 +46 12 42.174375120   16.24 15.45     ~ 224 0
58 NGC 3982 Sy2 11 56 28.1445516072 +55 07 30.859586652   12.20 11.70 11.18   ~ 588 1
59 POX 52 Sy2 12 02 56.93256 -20 56 02.9580           ~ 178 0
60 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2270 1
61 NGC 4074 Sy2 12 04 29.6666072616 +20 18 58.654406844   15.43 14.44     ~ 174 0
62 Z 243-45 Sy2 12 09 14.108 +47 03 30.09   15.55 14.73     ~ 161 1
63 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
64 LEDA 38901 AGN 12 12 20.0018002488 -28 48 45.112552416   18       ~ 17 0
65 7C 121146.50+294816.00 Sy1 12 14 17.8142672232 +29 31 43.179858912   16.43 15.33     ~ 102 1
66 NGC 4253 Sy1 12 18 26.5163572920 +29 48 46.531535472   14.34 13.57     ~ 1106 1
67 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
68 Mrk 1320 Sy1 12 19 08.7332044272 -01 48 29.057258988   15.0 15     ~ 38 0
69 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
70 NGC 4507 Sy2 12 35 36.6338976888 -39 54 33.710416272   12.95 13.54 11.70 12.4 ~ 532 1
71 NGC 4593 Sy1 12 39 39.4435107024 -05 20 39.034988448   13.95 13.15     ~ 1179 0
72 Mrk 783 Sy1 13 02 58.773 +16 24 27.59   16.04 15.55     ~ 136 0
73 NGC 4941 Sy2 13 04 13.1036380320 -05 33 05.752803672   13.18 12.23 10.74   ~ 410 0
74 NGC 4939 Sy2 13 04 14.3280524928 -10 20 22.300454724   14.81 13.80 10.92   ~ 332 1
75 NGC 5033 Sy2 13 13 27.535 +36 35 37.14   11.01 12.03 9.73   ~ 909 1
76 IC 4218 Sy1 13 17 03.4148671176 -02 15 40.708827648   14.60 14.73 13.540   ~ 69 1
77 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 500 1
78 MCG-06-30-015 Sy1 13 35 53.7691256160 -34 17 44.160716796   13.89 13.61 8.9   ~ 1559 0
79 NGC 5256 PaG 13 38 17.81 +48 16 41.2   14.1 13.42     ~ 449 1
80 NGC 5283 Sy2 13 41 05.7499712616 +67 40 19.967186280   14.97 14.05     ~ 269 0
81 Z 161-119 Sy2 13 41 11.1362655600 +30 22 41.249229816   15.60 14.66     ~ 197 0
82 IC 4329A Sy1 13 49 19.2601801224 -30 18 34.213815504   13.81 13.66 12.18 12.35 ~ 876 1
83 Z 336-28 Sy1 13 53 03.4348964112 +69 18 29.410910460   15.15 14.46     ~ 812 1
84 NGC 5347 Sy2 13 53 17.7984934128 +33 29 27.011618196   13.46 12.70     ~ 373 1
85 Tol 1351-373 G 13 54 -37.5           ~ 3 0
86 Mrk 463E Sy1 13 56 02.88573 +18 22 18.8440   15.01 14.22     ~ 158 1
87 NGC 5506 Bla 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1173 1
88 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0
89 NGC 5643 Sy2 14 32 40.778 -44 10 28.60   11.03 13.60 9.92 10.6 ~ 652 1
90 Z 296-15 Sy1 14 36 22.0820611632 +58 47 39.394934844   14.19 13.79     ~ 592 0
91 Z 273-23 Sy2 14 40 38.0960806920 +53 30 15.961505184   16.05 15.03     ~ 341 1
92 NGC 5728 Sy2 14 42 23.8918506576 -17 15 11.240783784   14.34 13.40     ~ 679 1
93 Z 134-43 Sy2 14 50 37.8500235408 +22 44 03.576974676   15.7       ~ 87 0
94 Mrk 841 Sy1 15 04 01.1935384104 +10 26 15.780409692   14.50 14.27     ~ 701 0
95 Z 21-17 Sy2 15 08 53.9542751376 -00 11 49.004597040   17.11 16.65     ~ 99 1
96 IC 1198 Sy1 16 08 36.3765301680 +12 19 51.601799568   15.63 14.94     ~ 135 0
97 [OKM2018] SWIFT J1617.7+0612 Sy1 16 17 52.4301748560 +06 04 18.209230284   15.66 15.7     ~ 72 0
98 Z 224-14 Sy1 16 23 45.8806648032 +41 04 56.429671836   17.04 16.61     ~ 126 0
99 ESO 138-1 Sy2 16 51 20.2789606296 -59 14 04.184655576   14.35 13.63 13.02   ~ 162 0
100 UGC 10683 Sy1 17 05 00.3938346624 -01 32 28.533617196   16.84 15.55 12.1   ~ 67 0
101 NGC 6300 Sy2 17 16 59.5418094960 -62 49 13.946588832   10.88 13.08 9.44 10.2 ~ 478 1
102 Z 170-20 Sy2 17 22 39.9317077560 +30 52 52.623719292   15.42 14.68     ~ 197 1
103 ESO 103-35 Sy2 18 38 20.3204821536 -65 25 39.141804936   14.75 14.53 13.24   ~ 342 0
104 ESO 140-43 Sy1 18 44 53.9892878664 -62 21 52.874216640   14.14 14.10 12.94 13.1 ~ 266 0
105 ESO 141-55 Sy1 19 21 14.1473895816 -58 40 12.982437480   14.36 13.64 13.28   ~ 394 0
106 NGC 6814 Sy1 19 42 40.5862186152 -10 19 25.108718844   15.33 14.21 11.7 11.3 ~ 866 0
107 NGC 6860 Sy2 20 08 46.8865940304 -61 05 59.782024608   13.70 13.53 12.14   ~ 203 0
108 NGC 6890 Sy2 20 18 18.1057797216 -44 48 24.750633168   13.06 14.02 11.57   ~ 171 0
109 Mrk 509 Sy1 20 44 09.7504483224 -10 43 24.727155528   13.35 13.12 10.7   ~ 1370 0
110 MCG-01-53-008 Sy1 20 46 20.8414665240 -02 48 45.360840096   15.27 14.61     ~ 135 0
111 IC 5063 Bla 20 52 02.15 -57 04 06.7   12.92 13.60 11.30   ~ 710 1
112 NGC 7130 Sy2 21 48 19.5412287192 -34 57 04.492024884   12.86 13.87 11.57   ~ 483 1
113 Z 403-4 Sy2 21 56 22.2667348968 +07 22 00.357100356   15.87 15.01     ~ 91 0
114 NGC 7314 Sy2 22 35 46.1985355872 -26 03 01.564993476   11.62 13.11 10.61 11.4 ~ 601 0
115 NGC 7450 Sy1 23 00 47.8143025368 -12 55 06.530572776   15.19 14.33 13.4 13.3 ~ 139 0
116 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3
117 Mrk 315 Sy1 23 04 02.6208829104 +22 37 27.433279164   15.60 14.78     ~ 151 0
118 MCG-02-58-022 Sy1 23 04 43.4776098480 -08 41 08.629476864   16.20 15.91 9.4   ~ 481 1
119 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 978 3
120 NGC 7743 Sy2 23 44 21.1607807112 +09 56 02.970989664   14.19 13.28     ~ 334 0
121 IC 1515 Sy2 23 56 03.9084301992 -00 59 18.645904428   14.8       ~ 50 0

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