2016A&A...587A..25G


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET01:28:11

2016A&A...587A..25G - Astronomy and Astrophysics, volume 587A, 25-25 (2016/3-1)

Origin of X-shaped radio-sources: further insights from the properties of their host galaxies.

GILLONE M., CAPETTI A. and ROSSI P.

Abstract (from CDS):

We analyze the properties of a sample of X-shaped radio-sources (XRSs). These objects show, in addition to the main lobes, a pair of wings that produce their peculiar radio morphology. We obtain our sample by selecting from the initial list of Cheung (2007AJ....133.2097C) the 53 galaxies with the better defined wings and with available SDSS images. We identify the host galaxies and measure their optical position angle, obtaining a positive result in 22 cases. The orientation of the secondary radio structures shows a strong connection with the optical axis, with all (but one) wing forming an angle larger than 40° with the host major axis. The probability that this is compatible with a uniform distribution is P=0.9x10–4. For all but three sources of the sample, spectroscopic or photometric redshifts are avaliable. The radio luminosity distribution of XRSs has a high power cut-off at L∼1034erg/s/Hz at 1.4GHz. Spectra are available from the SDSS for 28 XRSs. We modeled them to extract information on their emission lines and stellar population properties. The sample is formed by approximately the same number of high and low excitation galaxies (HEGs and LEGs); this classification is essential for a proper comparison with non-winged radio-galaxies. XRSs follow the same relations between radio and line luminosity defined by radio-galaxies in the 3C sample. While in HEGs a young stellar population is often present, this is not detected in the 13 LEGs, which is, again, in agreement with the properties of non-XRSs. The lack of young stars in LEGs supports the idea that they have not experienced a recent gas-rich merger. The connection between the optical axis and the wing orientation, as well as the stellar population and emission-line properties, provide further support for a hydro-dynamic origin of the radio-wings (for example, associated with the expansion of the radio cocoon in an asymmetric external medium) rather than with a change of orientation of the jet axis. In this framework, the high luminosity limit of XRSs can be interpreted as being due to high power jets being less affected by the properties of the surrounding medium.

Abstract Copyright:

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

Status in Simbad:  being processed

Simbad objects: 57

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Number of rows : 57

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 NVSS J000140-003348 rG 00 01 40.30 -00 33 48.8           ~ 7 0
2 PMN J0049+0100 rG 00 49 38.80 +00 59 46.0           ~ 9 1
3 NGC 326 rG 00 58 22.637 +26 51 58.61   14.9 13     ~ 160 2
4 PMN J0113+0105 rG 01 13 42.00 +01 05 57.0           ~ 6 1
5 PKS 0112-002 rG 01 15 27.5 +00 00 04           ~ 7 1
6 [C2007] J0144-0830 rG 01 44 09.98 -08 30 02.8           ~ 5 0
7 3C 52 rG 01 48 28.884 +53 32 28.19   18.5       ~ 78 1
8 3C 63 BLL 02 20 54.3 -01 56 51   18.5       ~ 137 0
9 2MASX J05160313+2458254 AGN 05 16 03.133 +24 58 25.47   17       ~ 84 1
10 2XMM J080535.0+240951 Sy2 08 05 35.0057673498 +24 09 50.334614040   15.46       ~ 310 1
11 NVSS J081300+434752 rG 08 13 00.113 +43 47 48.71           ~ 13 2
12 2MASX J08312752+3219270 EmG 08 31 27.521 +32 19 27.06   16.0       ~ 75 2
13 7C 083537.29+330346.00 BiC 08 38 44.615 +32 53 11.87           ~ 10 1
14 7C 084151.89+404213.00 AGN 08 45 08.435 +40 31 15.64   20.56 19.49     ~ 11 1
15 4C 05.39 AGN 09 17 44.4 +05 23 10   21.78 20.87     ~ 11 1
16 NVSS J092446+423349 rG 09 24 46.985 +42 33 47.75           ~ 12 2
17 4C -01.19 AGN 09 41 22.564 -01 43 01.08   20.91 19.68     ~ 23 1
18 2MASX J10055258+1154372 BiC 10 05 52.538 +11 54 37.01           ~ 13 1
19 2dFGRS TGN354Z041 BLL 10 08 11.4369971531 +00 29 59.962186369   16.9   15.895   ~ 43 1
20 8C 1012+599 QSO 10 15 41.1395165444 +59 44 45.353932014   18.68 18.51     ~ 26 1
21 NVSS J104022+505629 rG 10 40 22.478 +50 56 25.04           ~ 10 1
22 2MASX J10431869+3131058 IG 10 43 18.6392471582 +31 31 06.200648949   15.5       ~ 19 0
23 MCG+07-23-030 BiC 11 11 39.770 +40 50 24.35   17 15.0     ~ 40 1
24 NVSS J114049+105754 rG 11 40 49.60 +10 57 52.0           ~ 8 1
25 [C2007] 45 Rad 12 00 06.00 +61 05 44.5           ~ 2 0
26 7C 120500.59+340920.00 Sy2 12 07 32.930 +33 52 40.13   16.4       ~ 66 1
27 [YHW2016] 182.54996+11.35077 BiC 12 10 11.991 +11 21 02.77           ~ 7 0
28 [C2007] J1210-0341 rG 12 10 18.77 -03 41 53.3           ~ 6 0
29 4C 20.28 QSO 12 18 59.149 +19 55 28.05   21.46 20.49     ~ 15 1
30 NVSS J122803+264226 rG 12 28 03.8328763099 +26 42 26.715405272           ~ 7 1
31 87GB 125101.5+345109 AGN 12 53 24.3 +34 35 18   20.91 19.84     ~ 17 1
32 SDSS J125832.87+322740.8 Rad 12 58 32.8791893992 +32 27 40.851733782           ~ 3 0
33 4C 00.46 AGN 13 09 49.7535621457 -00 12 35.611655130   21.18 20.16     ~ 35 1
34 7C 130810.09+551431.00 AGN 13 10 15.4089532586 +54 58 34.115267015   20.61 19.72     ~ 7 2
35 2dFGRS TGN265Z253 BiC 13 27 38.223 -02 03 09.93   18.5   16.643   ~ 33 1
36 2MASX J13301034-0206184 BiC 13 30 10.322 -02 06 18.03   18.5       ~ 12 0
37 3XMM J133934.3-001633 LIN 13 39 34.238 -00 16 35.56   17.33   15.77   ~ 11 0
38 B2 1340+26 AGN 13 42 45.4 +25 47 11   20.73 20.34     ~ 5 0
39 [C2007] J1345+5233 rG 13 45 41.64 +52 33 35.6           ~ 2 0
40 NVSS J134804+441122 rG 13 48 04.90 +44 11 22.7           ~ 7 1
41 [C2007] 70 Rad 13 51 42.14 +55 59 43.1           ~ 2 0
42 87GB 135531.2+482202 AGN 13 57 30.60408 +48 07 41.7288   21.17 20.46     ~ 7 1
43 87GB 140331.6+071127 QSO 14 06 02.4084448219 +06 57 15.672429676   18.96 18.81     ~ 14 1
44 4C -01.31 AGN 14 06 48.6 -01 54 16   23.05 21.76     ~ 23 1
45 [C2007] 74 Rad 14 08 28.41 +02 25 50.3           ~ 3 0
46 MCG+05-34-033 Sy2 14 24 40.5279323590 +26 37 30.467747179   15.6 15.62     ~ 94 1
47 [C2007] J1434+5906 rG 14 34 02.17 +59 06 53.3           ~ 5 0
48 NVSS J144407+414751 rG 14 44 07.295 +41 47 50.48           ~ 11 2
49 SDSS J145558.28+323732.5 BiC 14 55 58.285 +32 37 32.60           ~ 6 0
50 [C2007] J1456+2542 rG 14 56 43.16 +25 42 17.5           ~ 4 0
51 NVSS J145942+290334 rG 14 59 41.909 +29 03 31.64           ~ 20 1
52 [C2007] 89 Rad 15 37 07.33 +26 48 23.2           ~ 2 0
53 2MASX J16003895+2058520 AGN 16 00 38.958 +20 58 52.05   20.18 19.21     ~ 10 1
54 4C 00.58 rG 16 06 12.6838937199 +00 00 27.209828294   16.85       ~ 60 1
55 87GB 160505.8+452546 AGN 16 06 38.9 +45 17 37   22.06 21.11     ~ 6 1
56 2MASX J16142837+2817314 BiC 16 14 28.4054082269 +28 17 31.029755533           ~ 13 1
57 4C 26.48B QSO 16 25 30.6871816994 +27 05 46.338091821   18.79 18.73     ~ 44 1

    Equat.    Gal    SGal    Ecl

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2020.02.17-01:28:11

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