2023A&A...671A..32C


Query : 2023A&A...671A..32C

2023A&A...671A..32C - Astronomy and Astrophysics, volume 671A, 32 (2023/3-1)

The MURALES survey VII. Optical spectral properties of the nuclei of 3C radio sources at 0.3 < z < 0.82.

CAPETTI A., BALMAVERDE B., BALDI R.D., BAUM S., CHIABERGE M., GRANDI P., MARCONI A., O'DEA C. and VENTURI G.

Abstract (from CDS):

This paper is the seventh work in the MUse RAdio Loud Emission lines Snapshot (MURALES) project series, presenting the results of observations obtained with the VLT/MUSE integral field spectrograph of 3C radio sources. Here, we discuss the optical spectral properties of the nuclei of 26 objects with 0.3 < z < 0.82 (median redshift 0.51). At these redshifts, the Hα and [N II] emission lines are not covered by optical spectra and alternative diagnostic diagrams are needed to separate the different spectroscopic sub-classes. We derived a robust spectroscopic classification into high and low-excitation galaxies (HEGs and LEGs) by only using the ratios of emission lines in the rest-frame UV and the blue portion of the spectra. A key result of this study is that FR II LEGs are also found at the highest level of radio power (up to L_178 MHz_ ∼ 2 × 1035 erg s–1 Hz–1), placing them among the most luminous radio sources in the Universe. Furthermore, their fraction within the FR II RG population does not strongly depend on radio luminosity. This suggests that the jet properties in powerful FR II radio sources do not depend on the accretion mode or on the structure of the accretion disk - as would otherwise be expected if the jet launching process were due to the extraction of the rotational energy of the supermassive black hole. The alternative possibility of recurrent transitions between a LEG and a HEG phase is disfavored based on the variation timescales of the various active galactic nucleus (AGN) components.

Abstract Copyright: © The Authors 2023

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

Simbad objects: 26

goto Full paper

goto View the references in ADS

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 - 2024
#notes
1 3C 16 rG 00 37 44.570 +13 19 55.00   21       ~ 126 3
2 3C 93.0 BLL 03 43 29.9963486496 +04 57 48.612170988   18.49 18.14     ~ 153 1
3 3C 99.0 Sy2 04 01 07.6 +00 36 33   20.200 19.010 18.532   ~ 106 1
4 3C 107 rG 04 12 22.6 -00 59 32   22       ~ 56 1
5 ICRF J041340.3+111214 Sy1 04 13 40.34100355 +11 12 14.7860055   18.96 18.01     ~ 325 2
6 3C 114 rG 04 20 22.1 +17 53 55   22       ~ 72 2
7 ICRF J052109.8+163822 Sy1 05 21 09.88596258 +16 38 22.0515459   19.37 18.84 18.480   ~ 856 1
8 3C 142.1 rG 05 31 29.4 +06 30 26   21       ~ 83 1
9 3C 175 Sy1 07 13 02.4220971768 +11 46 16.269484656   17.06 16.60     ~ 267 2
10 3C 187.0 rG 07 45 06.60 +01 59 43.0   19.5       ~ 60 1
11 ICRF J084047.5+131223 Sy1 08 40 47.58842599 +13 12 23.5637506   18.58 18.15 17.622   ~ 436 1
12 LB 9308 Sy1 09 06 31.8732919056 +16 46 11.785679112   18.48 18.27     ~ 298 3
13 3C 225B Rad 09 42 15.41 +13 45 51.0           ~ 35 0
14 3C 226.0 Sy1 09 44 16.51944 +09 46 16.9068   19.5       ~ 130 2
15 3C 228 rG 09 50 10.7 +14 19 58   21       ~ 167 2
16 3C 275 rG 12 42 19.6 -04 46 20   21       ~ 116 1
17 ICRF J124357.6+162253 Sy1 12 43 57.6491122968 +16 22 53.395049244   19.23 19.00     ~ 315 1
18 3C 277.2 Sy1 12 53 32.425 +15 42 25.29   21.5       ~ 152 1
19 3C 293.1 rG 13 54 41.3 +16 14 54   22       ~ 45 1
20 3C 306.1 rG 14 55 01.4 -04 20 23   19       ~ 67 1
21 3C 313 rG 15 10 57.0 +07 51 25   21.0       ~ 102 1
22 3C 327.1 Sy1 16 04 45.4065607140 +01 17 50.317968747   20.5       ~ 135 1
23 2E 3648 Sy1 16 20 21.8185395384 +17 36 23.952361176   16.53 16.41 20.5   ~ 419 2
24 3C 434 AGN 21 23 16.3 +15 48 06   20.84       ~ 61 2
25 3C 435 G 21 29 06.1 +07 32 59   21       ~ 68 2
26 3C 455.0 Sy2 22 55 03.8 +13 13 34   19.535 19.590 19.190   ~ 194 2

To bookmark this query, right click on this link: simbad:objects in 2023A&A...671A..32C and select 'bookmark this link' or equivalent in the popup menu