2015A&A...581A..33D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST02:37:37

2015A&A...581A..33D - Astronomy and Astrophysics, volume 581A, 33-33 (2015/9-1)

Far-UV to mid-IR properties of nearby radio galaxies.

DE RUITER H.R., PARMA P., FANTI R. and FANTI C.

Abstract (from CDS):

We investigate whether the far-UV continuum of nearby radio galaxies is due solely to the parent galaxy that passively evolves, or if it reveals evidence for the presence of other star-forming or non-stellar components. If the UV excess is due to an additional radiation component, we compare this with other properties such as radio power, optical spectral type (e.g. high- and low-excitation galaxies), and the strength of the emission lines. We also discuss the possible correlation between the ultraviolet flux, IR properties, and the central black hole mass. We used a sample of low-luminosity B2 radio galaxies and a small sample of higher luminosity 3C radio galaxies at comparable redshift (z<0.2). Spectral energy distributions (SEDs) were constructed using a number of on-line databases that are freely available now: GALEX, SDSS, 2MASS, and WISE. These were compared with model SEDs of early-type galaxies with passively evolving stellar populations at various ages (typically 0.5-1.3x109 years). We established whether a second component was needed to obtain a satisfactory fit with the observed overall SED. We introduce the parameter XUV, which measures the excess slope of the UV continuum between 4500 and 2000Å with respect to the UV radiation produced by the underlying old galaxy component. We find that the UV excess as measured by XUV is usually small or absent in low-luminosity (FR I) sources, but sets in abruptly at the transition radio power, above which we find mostly FRII sources. XUV behaves very similarly to the strength of the optical emission lines (in particular Hα). Below P1.4GHz<1024W/Hz XUV is close to zero. XUV correlates strongly with the Hα line strength, but only in sources with strong Hα emission. We discuss whether the line emission might be due to photoionization by radiation from the parent galaxy, possibly with additional star formation, or if it requires the presence of a non-stellar active galactic nucleus component. XUV and the slope of the mid-IR are strongly correlated, as measured by the WISE bands in the interval 3.4 to 22µm, in the sense that sources with a strong UV excess also have stronger IR emission. There is an inverse correlation between XUV and central black hole mass: the MBH of objects with strong UV excess is on average two to three times less massive than that of objects without UV excess. Low-luminosity radio galaxies tend to be more massive and contain more massive black holes.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: photometry - radio continuum: galaxies - ultraviolet: galaxies

VizieR on-line data: <Available at CDS (J/A+A/581/A33): table2.dat table3.dat table4.dat>

Simbad objects: 93

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Number of rows : 93

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 Z 479-45 rG 00 37 05.490 +25 41 56.43   14.8       ~ 74 0
2 MCG+05-16-010 AGN 06 52 02.497 +27 27 39.81   14.9       ~ 76 1
3 3C 189 QSO 07 58 28.10816 +37 47 11.8073   14.15 14.9     ~ 228 1
4 Z 118-54 rG 08 03 16.534 +24 40 36.12   15.7       ~ 33 0
5 2XMM J080535.0+240951 Sy2 08 05 35.0057673498 +24 09 50.334614040   15.46       ~ 312 1
6 4C 32.25A Rad 08 31 21.2 +32 18 50           ~ 8 0
7 4C 32.25B Rad 08 31 34.7 +32 20 01           ~ 3 0
8 ICRF J083915.8+285038 Sy1 08 39 15.82765836 +28 50 38.8030216   16.0 14.90     ~ 80 0
9 87GB 083648.3+293914 G 08 39 50.80 +29 28 16.2   20.8       ~ 11 1
10 4C 32.26 BiC 08 41 13.094 +32 24 59.65   14.08       ~ 69 1
11 IC 2402 BiC 08 47 59.045 +31 47 08.38   14.99       ~ 114 2
12 7C 090845.50+373633.00 BiC 09 11 53.612 +37 24 13.30   16.1       ~ 61 1
13 NVSS J091647+381807 rG 09 16 47.7569174634 +38 18 05.838017056           ~ 40 1
14 7C 0915+3203 AGN 09 18 57.9208878372 +31 51 10.777847306   15.5       ~ 59 1
15 3C 219 Sy1 09 21 08.6263828902 +45 38 57.345842278   19.56 18.69     ~ 385 2
16 2MASX J09272355+2955293 rG 09 27 23.5419613485 +29 55 29.519386983           ~ 20 0
17 B2.1 0924+30 Rad 09 27 37.7 +29 56 40           ~ 15 1
18 7C 093653.10+360601.00 Sy2 09 39 52.7593482853 +35 53 58.921088539   19.51 18.60     ~ 255 1
19 7C 095855.89+290131.00 Sy1 10 01 49.5226070599 +28 47 08.913353395   18.21 17.27     ~ 396 1
20 2MASX J10063883+2554452 BiC 10 06 38.816 +25 54 44.82   16.21       ~ 37 1
21 2MASX J10075705+2801479 BiC 10 07 57.067 +28 01 47.97           ~ 30 0
22 7C 103742.79+301338.00 LIN 10 40 29.9449605676 +29 57 57.789904220   16       ~ 42 1
23 B2 1102+30 A rG 11 05 24 +30 09.3   14.0       ~ 38 0
24 NGC 3563 PaG 11 11 25.30 +26 57 46.3           ~ 6 0
25 2MASX J11160377+2441018 BiC 11 16 03.802 +24 41 02.08   15.80       ~ 26 0
26 Z 156-60 rG 11 18 59.381 +27 54 07.01   15.7       ~ 35 0
27 NGC 3665 rG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 297 1
28 87GB 114142.2+372406 Sy2 11 44 27.155 +37 08 31.56   17.5       ~ 58 2
29 3C 264.0 QSO 11 45 05.0090520 +19 36 22.741257   14.98 13.97     ~ 532 2
30 NVSS J114649+352829 Rad 11 46 49.4 +35 28 29           ~ 6 1
31 ICRF J114722.1+350107 Sy2 11 47 22.13056 +35 01 07.5226   17.89 16.83 10.26   ~ 149 1
32 B2 1204+24 rG 12 07 07.409 +23 54 24.44           ~ 20 0
33 7C 120500.59+340920.00 Sy2 12 07 32.930 +33 52 40.13   16.4       ~ 67 1
34 NGC 4278 LIN 12 20 06.82563 +29 16 50.7124 11.54 11.09 10.16     ~ 887 2
35 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1634 2
36 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6207 3
37 B2 1243+26 A Rad 12 46 06.6 +25 53 39           ~ 4 0
38 2MASX J12462185+2627173 BiC 12 46 21.870 +26 27 16.85   19.7       ~ 43 1
39 B2 1243+26 C Rad 12 46 23.18 +25 51 31.3           ~ 2 0
40 NVSS J125630+270108 Rad 12 56 31.0 +27 01 09           ~ 3 1
41 B2 1256+28 A Rad 12 58 54.4 +28 18 03           ~ 8 0
42 NGC 4869 rG 12 59 23.331 +27 54 41.81 15.03 14.9 13.52 13.292 12.536 ~ 258 0
43 NGC 4874 LIN 12 59 35.709 +27 57 33.80 13.01 13.7 11.40 12.122 11.386 ~ 713 3
44 LEDA 1967073 BiC 13 03 15.5031452835 +31 50 18.510321907           ~ 17 0
45 NVSS J130550+305415 Rad 13 05 50.7 +30 54 15           ~ 12 1
46 4C 29.47 LIN 13 19 04.116 +29 38 34.40     15.7     ~ 76 1
47 NGC 5098 BiC 13 20 14.728 +33 08 36.25   15.0       ~ 93 2
48 2MASX J13211781+4235153 Sy2 13 21 17.813 +42 35 15.38   16.86 16.23     ~ 253 0
49 NGC 5127 LIN 13 23 45.018 +31 33 56.72   13.9       ~ 156 0
50 NVSS J132423+354627 Rad 13 24 23.3 +35 46 27           ~ 6 1
51 NGC 5141 LIN 13 24 51.44115875 +36 22 42.7741809   13.9       ~ 163 1
52 UGC 8669 BiC 13 41 50.454 +26 22 13.08   15.3 15.3     ~ 40 2
53 MCG+05-33-005 LIN 13 48 52.511 +26 35 34.84   14.0       ~ 219 2
54 NVSS J135013+281644 rG 13 50 13.546 +28 16 45.19   16.02       ~ 38 1
55 UGC 8782 LIN 13 52 17.765 +31 26 46.10   16.10 15.10     ~ 419 3
56 NVSS J140000+283038 rG 14 00 00.40 +28 30 38.2           ~ 36 1
57 NGC 5532 LIN 14 16 52.928 +10 48 26.43   13.3       ~ 318 3
58 MCG+05-34-033 Sy2 14 24 40.5279323590 +26 37 30.467747179   15.6 15.62     ~ 95 1
59 4C 25.46 rG 14 32 41.4662803924 +24 55 17.915833801     16.5     ~ 40 1
60 ICRF J144302.7+520137 Sy1 14 43 02.7611088916 +52 01 37.306023702   18.96 18.29     ~ 270 3
61 IC 1065 Sy2 14 49 21.5921149894 +63 16 13.816373757   17.30 16.39     ~ 332 1
62 MCG+05-35-018 AGN 14 49 27.925 +27 46 50.33   15.0       ~ 44 1
63 NVSS J145233+275758 rG 14 52 33.6 +27 57 54           ~ 66 1
64 2MASX J14575384+2832188 Sy2 14 57 53.840 +28 32 18.86   16.00       ~ 40 1
65 NVSS J145942+290334 rG 14 59 41.909 +29 03 31.64           ~ 20 1
66 VV 204 AGN 15 04 57.120 +26 00 58.46   15.24       ~ 274 0
67 4C 26.47 AGN 15 13 40.0227468596 +26 07 23.710955469   16.30       ~ 217 1
68 NVSS J151404+300846 rG 15 14 04.175 +30 08 47.11   16.47       ~ 33 0
69 2MASX J15232693+2837323 BiC 15 23 26.910 +28 37 32.53   15.68 15.5     ~ 62 0
70 3C 321 Sy2 15 31 43.473 +24 04 18.93   16.0   15.40   ~ 307 1
71 3C 326 Rad 15 52 26.60 +20 06 00.0   17.87 17.08     ~ 208 3
72 PKS 1553+245 rG 15 56 03.875 +24 26 52.70   15.4       ~ 85 1
73 IC 4587 LIN 15 59 51.6141171802 +25 56 26.320462797   15.5       ~ 45 1
74 NVSS J161140+310259 rG 16 11 40.228 +31 03 01.53           ~ 22 1
75 NGC 6086 BiC 16 12 35.531 +29 29 05.19   14.8       ~ 172 1
76 NVSS J161531+272657 rG 16 15 31.3594362835 +27 26 57.325593241           ~ 38 1
77 4C 35.40A Rad 16 17 20.5 +35 09 00   20.0       ~ 8 0
78 NGC 6109 LIN 16 17 40.591 +35 00 15.48   14.9       ~ 168 2
79 7C 161547.29+322956.00 Sy1 16 17 42.5379079793 +32 22 34.373288602   18.25 17.45     ~ 230 1
80 NGC 6137 BiC 16 23 03.087 +37 55 20.49   14.1       ~ 119 1
81 3C 338.0 QSO 16 28 38.2443686587 +39 33 04.231770853   12.78 11.78     ~ 701 5
82 NVSS J163918+295157 rG 16 39 18.40 +29 51 57.6           ~ 25 1
83 NVSS J164028+320529 rG 16 40 28.80 +32 05 29.2           ~ 20 1
84 2MASX J16434862+1715489 Sy2 16 43 48.605 +17 15 49.43   17.2       ~ 246 0
85 2MASX J16452767+2720064 BiC 16 45 27.681 +27 20 05.85           ~ 30 0
86 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1912 2
87 NVSS J165435+390559 Rad 16 54 35.7 +39 06 00           ~ 4 1
88 4C 32.52A rG 16 59 00.999 +32 29 39.25   16.55       ~ 45 1
89 3XMM J170011.1+323515 LIN 17 00 11.221 +32 35 14.79   17       ~ 34 0
90 4C 32.52 Rad 17 00 24.3 +32 33 32           ~ 7 0
91 4C 30.31 rG 17 00 45.2306715604 +30 08 12.865819789   15.00 14.3     ~ 67 0
92 4C 31.47 rG 17 28 20.134 +31 46 03.01   15.5       ~ 124 1
93 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 2006 1

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2020.07.04-02:37:37

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