2006A&A...460...45G

Query : 2006A&A...460...45G

2006A&A...460...45G - Astronomy and Astrophysics, volume 46045-57 (2006/12-2)

X-ray nature of the LINER nuclear sources.

GONZALEZ-MARTIN O., MASEGOSA J., MARQUEZ I., GUERRERO M.A. and DULTZIN-HACYAN D.

Abstract (from CDS):

We report the results from a homogeneous analysis of the X-ray (Chandra ACIS) data available for a sample of 51 LINER galaxies selected from the catalogue by Carrillo et al. (1999RMxAA..35..187C) and representative of the population of bright LINER sources. The nuclear X-ray morphology has been classified by their nuclear compactness in the hard band (4.5-8.0keV) into 2 categories: active galactic nuclei (AGN) candidates (with a clearly identified unresolved nuclear source) and starburst (SB) candidates (without a clear nuclear source). Sixty percent of the total sample are classified as AGNs, with a median luminosity of LX(2-10 keV)=2.5x1040erg/s, which is an order of magnitude higher than for SB-like nuclei. The spectral fitting allows us to conclude that most of the objects need a non-negligible power-law contribution. When no spectral fitting can be performed (data with a low signal-to-noise ratio), the color-color diagrams allow us to roughly estimate physical parameters, such as column density, temperature of the thermal model, or spectral index for a power-law, and therefore to better constrain the origin of the X-ray emission. The X-ray morphology, the spectra, and the color-color diagrams together allow us to conclude that a high percentage of LINER galaxies, at least ≃60%, could host AGN nuclei, although contributions from high-mass X-ray binaries or ultra-luminous X-ray sources cannot be ruled out for some galaxies.

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

Simbad objects: 82

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Number of rows : 82
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
3 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
4 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 511 0
5 Mrk 1014 Sy1 01 59 50.2534701768 +00 23 40.864244784   16.08 15.87     ~ 606 0
6 NGC 833 Sy2 02 09 20.8490871072 -10 07 59.003785884   14.02 13.00 12.75   ~ 207 0
7 NGC 835 Sy2 02 09 24.606 -10 08 09.31   13.29 12.45 12.24   ~ 226 1
8 HCG 16 CGG 02 09 40.82 -10 11 02.0           ~ 175 0
9 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
10 Anon 0248+43 B GiP 02 51 35.65 +43 15 10.9           ~ 9 1
11 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 756 3
12 NGC 2681 LIN 08 53 32.7183058512 +51 18 49.159212120 11.40 11.09 10.29     ~ 332 1
13 Z 289-11 Sy2 09 35 51.6045544584 +61 21 11.589382368   15.20 15.50     ~ 617 2
14 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
15 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
16 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
17 NGC 3226 rG 10 23 27.0064075320 +19 53 54.674937420   14.32 13.33     ~ 440 1
18 NGC 3245 LIN 10 27 18.3864983136 +28 30 26.621599932   11.6       ~ 372 0
19 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
20 NGC 3507 AGN 11 03 25.3619733360 +18 08 07.607343732   11.4       ~ 211 0
21 NGC 3607 Sy2 11 16 54.65687 +18 03 06.5120   13.84 12.76     ~ 490 1
22 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 527 0
23 NGC 3628 LIN 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 853 3
24 NGC 3690C G 11 28 30.70 +58 33 48.4           ~ 351 0
25 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
26 NGC 3690B GiP 11 28 31.02 +58 33 40.7   11.8       ~ 635 4
27 NGC 3690NE AGN 11 28 33.07 +58 33 54.2   11.8       ~ 635 4
28 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
29 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
30 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1
31 NGC 4111 LIN 12 07 03.1334091672 +43 03 56.345868252 12.07 11.63 10.74     ~ 350 1
32 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
33 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
34 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
35 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 1084 1
36 NGC 4314 LIN 12 22 32.0223000912 +29 53 43.814812200 11.72 11.43 10.58     ~ 494 1
37 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
38 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
39 NGC 4410 LIN 12 26 28.2946646976 +09 01 11.500520016   13.6 13.20     ~ 119 1
40 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 668 2
41 NGC 4457 LIN 12 28 59.0252479200 +03 34 14.215556928   11.9       ~ 342 0
42 NGC 4459 H2G 12 29 00.0329905416 +13 58 42.826603332   11.6       ~ 567 0
43 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
44 NGC 4494 GiP 12 31 24.0391348536 +25 46 30.071664120   10.55 9.74     ~ 491 0
45 M 88 Sy2 12 31 59.1525062448 +14 25 13.148971824   14.33 13.18     ~ 843 1
46 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
47 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
48 M 58 Sy2 12 37 43.59747 +11 49 05.1240 10.80 10.48 9.66     ~ 1140 2
49 NGC 4596 GiP 12 39 55.9544722920 +10 10 34.185047628   12.4       ~ 387 0
50 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
51 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
52 NGC 4676A AGN 12 46 10.05987 +30 43 54.6380           ~ 286 2
53 NGC 4676 IG 12 46 10.18 +30 43 53.7   14.1       ~ 318 0
54 NGC 4676B AGN 12 46 11.2495347624 +30 43 21.856578924   14.1       ~ 127 1
55 NGC 4698 Sy2 12 48 22.9082830584 +08 29 14.667552276   13.24 12.27     ~ 507 0
56 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
57 NGC 4696 rG 12 48 49.2724775784 -41 18 39.304053252   11.21   10.7   ~ 510 3
58 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
59 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
60 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
61 NGC 5256B Sy2 13 38 17.3501417856 +48 16 31.909717416   14.19 13.42     ~ 91 0
62 NGC 5256 PaG 13 38 17.81 +48 16 41.2   14.1 13.42     ~ 449 1
63 Z 271-60 Sy2 13 44 42.1883001099 +55 53 13.596220922   15.68 14.91     ~ 958 3
64 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
65 Z 162-10 LIN 13 48 52.4892734448 +26 35 34.353002688   14.0       ~ 241 2
66 NGC 5494 EmG 14 12 24.1841884992 -30 38 38.410742580   12.64 12.02 11.36 11.6 ~ 58 0
67 NGC 5746 GiP 14 44 56.005 +01 57 17.06   12.3       ~ 375 0
68 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
69 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 578 2
70 NGC 6251 Bla 16 32 31.96989253 +82 32 16.3999044 15.24 14.66 12.89 7.62   ~ 772 1
71 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
72 LEDA 60189 LIN 17 23 21.96264 -00 17 00.8088   15.1       ~ 454 0
73 NGC 6482 GiG 17 51 48.8339247888 +23 04 18.889271112 12.71 12.35 11.45     ~ 220 1
74 NGC 7130 Sy2 21 48 19.5412287192 -34 57 04.492024884   12.86 13.87 11.57   ~ 483 1
75 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1284 2
76 3C 452 Sy2 22 45 48.7616172744 +39 41 15.906782184   17.60 16.56     ~ 391 1
77 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2
78 [DTD2006] IRAS 23128-5919 S GiP 23 15.7 -59 03           ~ 9 1
79 [DTD2006] IRAS 23128-5919 N GiP 23 15.7 -59 03           ~ 8 1
80 ESO 148-2 Sy2 23 15 46.76280 -59 03 15.6924   14.94 14.73 13.95   ~ 289 1
81 NAME NGC 4410 Group GrG ~ ~           ~ 8 1
82 APG 120B G ~ ~           ~ 3 0

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