2026A&A...705A.122D

Query : 2026A&A...705A.122D

2026A&A...705A.122D - Astronomy and Astrophysics, volume 705A122 (2026/1-1)

Revised optical classification of a sample of gamma-ray-emitting active galactic nuclei with GTC and VLT.

DALLA BARBA B., FOSCHINI L., BERTON M., JARVELA E., MARZIANI P., CIROI S., DALLA BONTA E., CREPALDI L., VIETRI A., ANTON S., MARCHA M.J.M., CONDO P. and MAZZUCCHELLI C.

Abstract (from CDS):

We report the results of the optical follow-up of a sample of γ-ray-emitting active galactic nuclei (AGNs). New high-quality optical spectra were obtained using the Gran Telescopio Canarias with the Optical System for Imaging and low-Intermediate-Resolution Integrated Spectroscopy and the European Southern Observatory's Very Large Telescope Unit Telescope 1 with the FOcal Reducer and low dispersion Spectrograph 2. From the analysis of these spectra, we confirmed the previous narrow-line Seyfert 1 (NLS1) classification for four objects and discovered two new NLS1s, bringing the total number of optically confirmed γ-NLS1s to 26. We also identified two ambiguous cases between NLS1 and intermediate Seyfert (IS), three ISs, one broad-line Seyfert 1, and one Seyfert 2. Based on the new spectra, we calculated black hole masses ranging from 106.25 to 109.32 M⊙ and Eddington ratios spanning 0.05 to 2.07. This reclassification provides support for the scenario in which AGNs with relatively low black hole masses are capable of launching powerful relativistic jets and contributes to our broader understanding of γ-ray-emitting AGNs.

Abstract Copyright: © The Authors 2026

Journal keyword(s): galaxies: active - galaxies: jets - quasars: emission lines - galaxies: Seyfert

Simbad objects: 44

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Number of rows : 44
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 QSO B2358+2056 QSO 00 01 32.3703295704 +21 13 36.275283372     19.10     ~ 27 1
2 [VV2006] J001028.8+204749 Bla 00 10 28.74304373 +20 47 49.7884182     17.80 18.41   ~ 67 1
3 SDSS J001420.43-045928.8 QSO 00 14 20.4326237136 -04 59 28.821778224           ~ 9 1
4 ICRF J003820.5-020740 Sy1 00 38 20.52934376 -02 07 40.5469964   19.04 18.02 17.6   ~ 255 1
5 NAME CRATES J0102+4214 Bla 01 02 27.1487492736 +42 14 18.984248160       19   ~ 60 1
6 SDSS J010555.23+191228.0 QSO 01 05 55.2411583272 +19 12 28.039312584           ~ 17 1
7 4C 06.11 Bla 02 24 28.42818961 +06 59 23.3415566   20.8 20.0 17.78   ~ 172 1
8 6C 032130+340016 BLL 03 24 41.1612813408 +34 10 45.857918460     15.72 13.1   ~ 314 1
9 ICRF J042210.7-064345 Bla 04 22 10.7953112760 -06 43 45.330888216       16.9   ~ 77 1
10 QSO B0440-003 Bla 04 42 38.66072366 -00 17 43.4209582   19.59 19.22 17.85   ~ 433 1
11 QSO B0514-459 Bla 05 15 45.2501347656 -45 56 43.198786536   18.18 17.5 17.31   ~ 132 1
12 ICRF J052123.5-173730 BLL 05 21 23.5579026408 -17 37 30.185353524       17.77   ~ 64 1
13 QSO J0849+5108 BLL 08 49 57.97685916 +51 08 29.0238146   19.37 18.78 17.79   ~ 270 2
14 6C 092913+531943 Bla 09 32 41.1507769128 +53 06 33.806842272   19.38 19.18 18.82   ~ 100 1
15 2SLAQ J093323.03-001051.7 Sy1 09 33 23.0311899192 -00 10 51.584774880   18.91 18.73     ~ 36 1
16 QSO J0948+0022 Bla 09 48 57.32005819 +00 22 25.5596984   18.85 18.61 18.17   ~ 350 2
17 ICRF J094939.7+175249 Bla 09 49 39.7634 +17 52 49.432   17.0 17.0 17.5   ~ 76 1
18 Ton 469 Bla 09 58 20.9496221568 +32 24 02.208417372   15.88 15.78 15.51   ~ 442 1
19 [VV2010c] J095909.5+460014 Sy1 09 59 09.5127242952 +46 00 14.274395280   20.66 20.18     ~ 9 0
20 QSO B1045-188 Bla 10 48 06.62062314 -19 09 35.7272070   18.59 18.20 17.10   ~ 203 1
21 2MASS J11024984+5250125 Bla 11 02 49.8448281624 +52 50 12.654341592   20.35 20.18 20.06   ~ 54 1
22 ICRF J112758.8+362028 Bla 11 27 58.87083269 +36 20 28.3514025   20.86 20.52 20.05   ~ 93 1
23 6C 115118+405352 Bla 11 53 54.65896512 +40 36 52.6193857   19.68 19.36 20.2   ~ 101 1
24 QSO B1200-051 Bla 12 02 34.2248389296 -05 28 02.490220380   16.4 18.0 16.6   ~ 74 1
25 6C 120623+545839 Bla 12 08 54.25643167 +54 41 58.1632900   19.55 19.18 19.5   ~ 117 1
26 PKS 1211-190 Rad 12 14 04.9 -19 20 33           ~ 2 0
27 QSO J1246-2547 Bla 12 46 46.80203943 -25 47 49.2889822   17.65 17.41 16.96 15.5 ~ 314 1
28 6C 130312+513213 Sy1 13 05 22.7454747504 +51 16 40.206559080   17.65 17.40     ~ 62 1
29 6C 1308+5529 Bla 13 11 03.21080610 +55 13 54.3224281   19.86 19.49 20.41   ~ 116 1
30 3FGL J1331.1-1328 BLL 13 31 20.3588348256 -13 26 05.590756896           ~ 31 1
31 6C 144133+473846 QSO 14 43 18.5610671304 +47 25 56.676226944   18.61 18.48     ~ 54 1
32 QSO J1505+0326 Bla 15 05 06.47716039 +03 26 30.8125704   19.02 18.62 17.72   ~ 278 1
33 6C 151853+422209 Bla 15 20 39.7213 +42 11 11.457       18.09   ~ 78 1
34 [VV2006] J163915.8+412833 QSO 16 39 15.8122 +41 28 33.702   19.36 19.16 19.04 18.90 ~ 43 1
35 QSO J1644+2619 Bla 16 44 42.5339200680 +26 19 13.227002976   18.80 18.42     ~ 114 1
36 6C 170021+683437 Bla 17 00 09.29285259 +68 30 06.9591278     17.00 18.47   ~ 143 1
37 BWE 1816+0902 Bla 18 18 40.0616593848 +09 03 46.230992640   19.0 19.5 18.5   ~ 57 1
38 QSO J1848+3219 Bla 18 48 22.08857099 +32 19 02.6037977       18.79   ~ 163 2
39 2MASS J19030130-6749355 Bla 19 03 01.2327954288 -67 49 35.856167016   18.90   16.64   ~ 64 1
40 QSO B2004-447 Bla 20 07 55.1842447944 -44 34 44.274118260   19.3 19.3 18   ~ 185 1
41 SDSS J211817.39+001316.8 Bla 21 18 17.3982630936 +00 13 16.811482440   18.7 19.29 18.6   ~ 109 1
42 2MASS J21185296-0732275 Sy1 21 18 52.9632528816 -07 32 27.590693424   20.07 19.48     ~ 62 1
43 [VV96] J232528.6-355754 QSO 23 25 28.6115465448 -35 57 54.196483104   17.9 17.9     ~ 34 1
44 SDSS J235405.55-095749.0 Bla 23 54 05.55389 -09 57 49.0373       20.1   ~ 24 1

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