2007MNRAS.374.1290G

Query : 2007MNRAS.374.1290G

2007MNRAS.374.1290G - Mon. Not. R. Astron. Soc., 374, 1290-1302 (2007/February-1)

On the origin of soft X-rays in obscured AGN: answers from high-resolution spectroscopy with XMM-Newton.

GUAINAZZI M. and BIANCHI S.

Abstract (from CDS):

We present results of a high-resolution soft X-ray (0.2-2 keV) spectroscopic study of a sample of 69 nearby obscured active galactic nuclei (AGNs) observed with the reflection grating spectrometer (RGS) onboard XMM-Newton. This is the largest sample ever studied with this technique so far. The main conclusions of our study can be summarized as follows: (i) narrow radiative recombination continua are detected in about 36 per cent of the objects in our sample (in 26 per cent their intrinsic width is ≤10 eV); (ii) higher order transitions are generally enhanced with respect to pure photoionization, indicating that resonant scattering plays an important role in the ionization/excitation balance. These results support the scenario, whereby the active nucleus is responsible for the X-ray `soft excess' almost ubiquitously observed in nearby obscured AGNs via photoionization of circumnuclear gas. They confirm on a statistical basis the conclusions drawn from the detailed study of the brightest spectra in the sample. Furthermore, we propose a criterion to statistically discriminate between AGN-photoionized sources and starburst galaxies, based on intensity of the forbidden component of the Ovii Heα triplet (once normalized to the Oviii Lyα) coupled with the integrated luminosity in He- and H-like oxygen lines.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): galaxies: active - galaxies: nuclei - galaxies: Seyfert - X-rays: galaxies

Simbad objects: 107

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Number of rows : 107
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 34 Sy2 00 11 06.612 -12 06 28.33   14.14 13.52     ~ 350 0
2 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3335 2
3 NGC 262 Sy2 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 735 3
4 NGC 424 Sy2 01 11 27.6385025496 -38 05 00.421096524   13.76 14.12 12.38 12.8 ~ 324 0
5 Mrk 1152 Sy1 01 13 50.0743327440 -14 50 44.359466892   15.80 15.00 9.9   ~ 116 0
6 NGC 449 Sy2 01 16 07.2128 +33 05 21.652   15.90 14.96     ~ 286 4
7 NGC 474 GiP 01 20 06.6870520512 +03 24 55.861973100 12.75 12.37 11.51 11.42 10.56 ~ 355 1
8 NGC 526 Sy2 01 23 54.3772245792 -35 03 55.710850788   14.76 14.60 13.46   ~ 329 1
9 NGC 520 AG? 01 24 34.90 +03 47 29.4 12.41 12.24 11.42     ~ 513 3
10 Mrk 993 Sy2 01 25 31.4551524072 +32 08 10.473856512   15.01 13.96     ~ 217 0
11 NGC 591 Sy2 01 33 31.2305692968 +35 40 05.628351108   14.71 13.90     ~ 199 2
12 NGC 660 Sy2 01 43 02.350 +13 38 44.45   12.02 11.16     ~ 556 2
13 Mrk 573 Sy2 01 43 57.7777898304 +02 20 59.531401716   14.90 14.07     ~ 533 0
14 ZW III 35 Sy2 01 44 30.516 +17 06 09.18   15.24 14.81     ~ 249 0
15 ICRF J015002.6-072548 Sy2 01 50 02.6975795592 -07 25 48.453672360   16.86 15.62 15.62   ~ 150 0
16 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4600 2
17 Mrk 1066 Sy2 02 59 58.5970307633 +36 49 13.808979663   14.89 13.96     ~ 348 1
18 Mrk 1073 Sy2 03 15 01.4292441960 +42 02 08.825019072   15.05 14.18 12.54   ~ 190 1
19 NGC 1313 AG? 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 687 2
20 Mrk 612 Sy2 03 30 40.866 -03 08 15.69   15.03 14.25     ~ 93 0
21 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1801 2
22 NGC 1386 Sy1 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 520 1
23 NGC 1410 Sy2 03 41 10.7 -01 17 55   16.06 15.22     ~ 33 0
24 NGC 1482 EmG 03 54 38.928 -20 30 08.82 13.15 13.14 12.15 11.29   ~ 294 2
25 NGC 1511 GiP 03 59 36.98373 -67 38 03.3430   11.97   10.74 11.1 ~ 137 0
26 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 667 0
27 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 662 1
28 NGC 2110 Sy2 05 52 11.3768668776 -07 27 22.507465392   14.77 13.51 11.86   ~ 662 1
29 Mrk 3 Sy2 06 15 36.2812259376 +71 02 14.837219808 14.21 14.03 12.97     ~ 916 3
30 NGC 2146 SBG 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 720 2
31 NGC 2273 Sy2 06 50 08.6691789600 +60 50 44.864645136   14.50 13.54     ~ 527 3
32 IC 450 Sy1 06 52 12.3346265592 +74 25 37.121227716   15.16 14.19     ~ 571 1
33 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1788 1
34 Mrk 1210 Sy2 08 04 05.8608218112 +05 06 49.823376120   14.55 13.7     ~ 306 2
35 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 768 2
36 [SST2011] J081929.00+704219.3 ULX 08 19 28.99 +70 42 19.4           ~ 193 2
37 NGC 2623 LIN 08 38 24.016 +25 45 16.29 14.10 13.99 13.36     ~ 498 1
38 NAME IRAS F08572+3915 NW LIN 09 00 25.364 +39 03 54.23     16.66     ~ 420 1
39 2MASS J09134545+4056282 Sy2 09 13 45.4951283928 +40 56 28.215343572   19.69 19.21     ~ 250 2
40 NGC 2798 GiP 09 17 22.9 +42 00 00 13.03 13.04 12.32     ~ 325 3
41 APG 283 PaG 09 17 26.99 +41 59 48.8   12.2       ~ 193 1
42 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 1104 1
43 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 890 3
44 ESO 434-40 Sy2 09 47 40.1332188528 -30 56 55.960779696   14.10 13.69 12.44   ~ 552 0
45 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5858 6
46 IC 2560 Sy2 10 16 18.7073057664 -33 33 49.720274676   12.53 13.31 11.25 12.2 ~ 260 0
47 [VV96] J102434.5+470911 Sy1 10 24 34.5 +47 09 11     20.5     ~ 485 0
48 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 848 2
49 NGC 3310 AGN 10 38 45.85707 +53 30 11.8940   12.45 12.15     ~ 773 1
50 NGC 3395 GiP 10 49 50.1160141680 +32 58 58.421838360   12.1 12.10     ~ 277 2
51 APG 270 PaG 10 49 51.2 +32 58 58           ~ 185 0
52 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 978 4
53 NAME NGC 3690 West GiP 11 28 31.02 +58 33 40.7   11.8       ~ 629 4
54 NAME NGC 3690 East AGN 11 28 33.07 +58 33 54.2   11.8       ~ 631 4
55 Mrk 176 Sy2 11 32 40.2448971432 +52 57 01.289256768   15.50 14.61 13.52   ~ 237 2
56 APG 294 GrG 11 39.7 +31 55           ~ 260 0
57 NGC 3786 Sy2 11 39 42.5121341928 +31 54 33.971791752   14.62 13.74     ~ 393 1
58 NGC 3982 Sy1 11 56 28.1445516072 +55 07 30.859586652   12.20 11.70 11.18   ~ 550 1
59 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1332 1
60 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1691 0
61 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1160 1
62 NGC 4138 Sy2 12 09 29.8011417048 +43 41 06.864140004 12.46 12.29 11.32 10.82   ~ 410 1
63 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3688 2
64 NGC 4168 Sy1 12 12 17.2692381408 +13 12 18.688208724 12.58 12.11 11.18     ~ 376 2
65 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 965 1
66 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2364 3
67 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 996 2
68 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1177 1
69 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1125 1
70 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2093 2
71 NGC 4477 Sy2 12 30 02.1955766304 +13 38 11.543715888 11.98 11.38 10.42     ~ 396 2
72 NGC 4507 Sy2 12 35 36.6338976888 -39 54 33.710416272   12.95 13.54 11.70 12.4 ~ 495 0
73 NGC 4565 LIN 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 956 0
74 NGC 4639 GiP 12 42 52.3785000336 +13 15 26.706153600   13.62 12.72     ~ 610 0
75 NGC 4725 Sy2 12 50 26.5716367992 +25 30 02.733090588   13.45 12.44     ~ 695 2
76 ESO 443-17 AGN 12 57 44.949 -29 45 59.04   13.84 13.73 12.52   ~ 50 0
77 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1475 2
78 NGC 4968 Sy2 13 07 05.976 -23 40 37.34   13.78 14.79 12.46 12.78 ~ 182 1
79 NGC 5033 Sy2 13 13 27.535 +36 35 37.14   11.01 12.03 9.73   ~ 869 3
80 NGC 5073 Sy2 13 19 20.6629199856 -14 50 40.937423928   13.46   12.19   ~ 95 0
81 MCG-03-34-064 Sy2 13 22 24.4583154360 -16 43 42.481822404   14   13.16   ~ 315 2
82 LEDA 2816051 Sy1 13 22 49.2007765584 +54 55 28.261413012   16.63 16.24     ~ 42 0
83 ESO 509-66 Sy2 13 34 39.6208983000 -23 26 47.629092300   16.60 16.6 15.19   ~ 76 1
84 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2572 2
85 UGC 8621 Sy2 13 37 39.972 +39 09 16.70   20.08 19.64     ~ 90 0
86 NGC 5252 Sy2 13 38 15.8707724328 +04 32 33.521265600   15.21 14.21     ~ 480 0
87 NGC 5253 AGN 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1365 4
88 NGC 5273 Sy1 13 42 08.3801616672 +35 39 15.467518836   14.01 13.12     ~ 468 0
89 2dFGRS TGN271Z063 Sy2 14 00 40.5701804832 -01 55 18.192681192   17   15.634   ~ 42 0
90 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1215 2
91 NGC 5506 Sy2 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1091 0
92 IC 4395 Sy2 14 17 21.083 +26 51 26.46   15.1       ~ 99 0
93 LEDA 140305 Sy1 14 21 29.7471448080 +47 47 24.480769848   20.82 19.87     ~ 97 1
94 NGC 5643 Sy2 14 32 40.778 -44 10 28.60   11.03 13.60 9.92 10.6 ~ 571 0
95 IRAS 15480-0344 Sy2 15 50 41.4972847704 -03 53 17.990582640   16.20 15.1 14.83   ~ 98 0
96 NGC 6552 Sy2 18 00 07.2518347776 +66 36 54.360343188   14.6 13.74     ~ 161 2
97 IC 4995 Sy2 20 19 58.9795544088 -52 37 18.903502956   14.32 14.06 12.84   ~ 62 0
98 NGC 7172 Sy2 22 02 01.897 -31 52 11.60   12.72 13.61 11.15 25.10 ~ 529 1
99 NGC 7212 Sy2 22 07 01.9870259424 +10 14 00.838175892   15.1       ~ 196 1
100 NGC 7314 Sy2 22 35 46.1985355872 -26 03 01.564993476   11.62 13.11 10.61 11.4 ~ 565 0
101 NGC 7479 Sy2 23 04 56.6432243448 +12 19 22.357387020 11.74 11.60 10.85 10.47 9.66 ~ 742 2
102 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 552 3
103 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 906 2
104 NGC 7674 Sy2 23 27 56.6973043968 +08 46 44.253707772 13.84 13.92 13.23 12.64   ~ 700 4
105 NGC 7714 GiP 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 765 1
106 APG 284 PaG 23 36 19 +02 09.3   12.6       ~ 607 0
107 Mrk 331 GiP 23 51 26.731 +20 35 10.22   14.9       ~ 227 0

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