2015A&A...581A..76B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST06:55:27

2015A&A...581A..76B - Astronomy and Astrophysics, volume 581A, 76-76 (2015/9-1)

The naked nuclei of low ionization nuclear emission line regions.

BALMAVERDE B. and CAPETTI A.

Abstract (from CDS):

We analyze HST spectra and Chandra observations of a sample of 21 low ionization nuclear emission line regions (LINERs), at least 18 of which genuine active galactic nuclei. We find a correlation between the X-rays and emission lines luminosities, extending over three orders of magnitude and with a dispersion of 0.36 dex; no differences emerge between LINERs with and without broad lines, or between radio-loud and radio-quiet sources. The presence of such a strong correlation is remarkable considering that for half of the sample the X-ray luminosity can not be corrected for local absorption. This connection is readily understood since the X-ray light is associated with the same source producing the ionizing photons at the origin of the line emission. This implies that we have a direct view of the LINERs nuclei in the X-rays: the circumnuclear, high column density structure (the torus) is absent in these sources. Such a conclusion is also supported by mid-infrared data. We suggest that this is due to the general paucity of gas and dust in their nuclear regions that causes also their low rate of accretion and low bolometric luminosity.

Abstract Copyright:

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

Simbad objects: 26

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Number of rows : 26

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 315 LIN 00 57 48.88335 +30 21 08.8122 12.80 12.20 11.16 11.26   ~ 707 2
2 NGC 1052 GiP 02 41 04.79851 -08 15 20.7517 11.84 11.41 10.47 10.71   ~ 1143 2
3 NGC 1961 LIN 05 42 04.775 +69 22 42.17   11.73 10.99     ~ 305 3
4 NGC 2787 LIN 09 19 18.6043000282 +69 12 11.642887220   12.92 11.79     ~ 316 0
5 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3965 5
6 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 742 1
7 NGC 3998 SyG 11 57 56.1333561013 +55 27 12.925850484   11.64 12.10 10.09   ~ 575 2
8 NGC 4036 LIN 12 01 26.891 +61 53 44.52   12.18 11.20     ~ 234 0
9 NGC 4138 Sy1 12 09 29.788 +43 41 07.14 12.46 12.29 11.32 10.82   ~ 349 1
10 NGC 4143 LIN 12 09 36.086 +42 32 03.18   13.04 12.08     ~ 212 0
11 NGC 4203 LIN 12 15 05.0543630359 +33 11 50.401356393   12.98 11.99     ~ 454 2
12 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1115 0
13 NGC 4278 LIN 12 20 06.82563 +29 16 50.7124 11.54 11.09 10.16     ~ 888 2
14 NGC 4314 LIN 12 22 31.978 +29 53 43.09 11.72 11.43 10.58     ~ 450 1
15 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1635 2
16 NGC 4450 LIN 12 28 29.634 +17 05 05.82   10.90 10.08     ~ 510 1
17 NGC 4477 Sy2 12 30 02.172 +13 38 11.19 11.98 11.38 10.42     ~ 363 2
18 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6213 3
19 M 91 LIN 12 35 26.430 +14 29 46.75   14.63 13.57     ~ 524 0
20 M 58 SyG 12 37 43.597 +11 49 05.12 10.80 10.48 9.66     ~ 969 2
21 M 104 LIN 12 39 59.43185 -11 37 22.9954 9.51 9.55 8.00 8.05   ~ 1275 3
22 NGC 4636 LIN 12 42 49.867 +02 41 16.01   12.62 11.84     ~ 1041 1
23 M 94 SyG 12 50 53.148 +41 07 12.55 9.15 8.96 8.24 7.78   ~ 1217 3
24 NGC 5005 GiP 13 10 56.312 +37 03 32.19   14.67 13.67     ~ 497 2
25 NGC 5077 GiP 13 19 31.66964077 -12 39 25.0754790   13.87 12.85 11.30   ~ 270 0
26 NGC 6500 LIN 17 55 59.78195 +18 20 17.6713   13.43 12.54     ~ 208 0

    Equat.    Gal    SGal    Ecl

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2020.07.13-06:55:27

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