2025ApJ...987..118J

Query : 2025ApJ...987..118J

2025ApJ...987..118J - Astrophys. J., 987, 118 (2025/July-2)

The Central Engine of Low-luminosity Radio Galaxy 3C 270 (NGC 4261).

JIANG C., ANTONUCCI R., ACOSTA-PULIDO J.A. and OGLE P.

Abstract (from CDS):

We present the polarization spectra of the nucleus of 3C 270. We confirm that the polarization angles of both the continuum and the emission lines are close to perpendicular to the jet direction after careful correction of interstellar polarization, which indicates polar scattering. The Stokes flux spectrum resembles the total flux spectrum, with no need for a broad component from the broad-line region. Over 94% of a sample of Seyfert I broad-line profiles would be significantly detected if present in our polarized flux spectrum. We favor the hypothesis that we are observing the continuum including any contribution from radiatively inefficient accretion flow and beamed synchrotron instead of a big blue bump, as well as the innermost narrow-line region, through reflection. This makes 3C 270 the third known case, after NGC 4258 and Centaurus A, where only narrow lines (and the continuum, if present) are scattered, with no evidence of an underlying big blue bump.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Low-luminosity active galactic nuclei

Simbad objects: 46

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Number of rows : 46
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 ESO 113-45 Sy1 01 23 45.7631533440 -58 48 20.808928944   14.08 13.83 13.34   ~ 965 0
2 LEDA 6178 Sy1 01 40 17.0678986752 -00 50 03.026578740   16.46 16.30 16.3   ~ 98 0
3 Mrk 1014 Sy1 01 59 50.2534701768 +00 23 40.864244784   16.08 15.87     ~ 606 0
4 PHL 1412 QSO 02 39 22.8793267128 -00 01 19.639697016   15.78 15.48 15.97   ~ 46 0
5 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
6 [VV2000] J082758.5+233303 QSO 08 27 58.5273754440 +23 33 02.895063192   16.55 16.35     ~ 27 0
7 [VV2006] J082958.8+513044 QSO 08 29 58.7836914720 +51 30 44.566614576   16.87 16.65     ~ 25 0
8 QSO B0832+2510 QSO 08 35 35.8061692320 +24 59 40.183955880   16.30 16.00     ~ 77 0
9 3C 206 Sy1 08 39 50.5829445936 -12 14 34.327188564   15.78 15.76     ~ 254 1
10 Ve 6-23 Or* 09 06 00.0118809024 -47 18 58.165963236 14.28 13.83 12.12     B0V 54 0
11 Ton 1057 Sy1 09 25 54.7145627448 +19 54 05.064888348   16.02 15.89     ~ 187 0
12 LEDA 2149945 Sy1 09 50 48.3803143440 +39 26 50.467298496   16.83 16.73     ~ 216 0
13 Ton 28 Sy1 10 04 02.6102134920 +28 55 35.329310688   16.17 15.7     ~ 192 0
14 LEDA 29208 Sy1 10 04 20.1379926888 +05 13 00.400882728   16.73 16.55     ~ 260 1
15 4C 13.41 Sy1 10 07 26.0965408440 +12 48 56.184940764   15.81 15.68     ~ 418 2
16 2MASS J10145491+0033374 Sy1 10 14 54.9035635608 +00 33 37.366161048   20.23 18.94 16.104   ~ 169 0
17 NGC 3147 Sy2 10 16 53.6388580752 +73 24 02.641798224   11.43 10.61     ~ 533 2
18 PKS 1020-10 BLL 10 22 32.8200967176 -10 37 44.309640648   16.25 16.11 16.0   ~ 144 1
19 QSO B1048+342 Sy1 10 51 43.8916339296 +33 59 26.683392840   17.11 16.79     ~ 210 0
20 LEDA 34449 Sy1 11 17 06.3989076960 +44 13 33.324039480   16.32 16.12     ~ 265 1
21 LEDA 34570 Sy1 11 18 30.2894794680 +40 25 54.068810952   16.34 16.21     ~ 246 0
22 Ton 1388 Sy1 11 19 08.6786220240 +21 19 17.987085948   14.91 14.80     ~ 492 0
23 QSO J1204+2754 Bla 12 04 42.1097215992 +27 54 11.869350264   15.64 15.60     ~ 429 0
24 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
25 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
26 HD 107289 * 12 20 11.7942067464 +05 45 05.862388608   9.70 9.28 9.2   A3 12 0
27 HD 109055 * 12 31 41.2764865080 +22 07 24.416279400   8.86 8.82     A0V 51 0
28 Z 99-79 Sy1 12 32 03.6223710000 +20 09 29.495834136   15.57 15.30     ~ 526 0
29 LEDA 45656 Sy1 13 09 47.0031619008 +08 19 48.212362524   16.04 15.89     ~ 412 0
30 Ton 1565 Bla 13 12 17.7526981968 +35 15 21.086467128   15.45 15.64 14.2   ~ 292 1
31 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
32 PB 4142 Sy1 13 54 35.6874184872 +18 05 17.504491992   16.84 16.68     ~ 237 1
33 PG 1404+226 Sy1 14 06 21.8900886888 +22 23 46.515550056   16.62 16.42     ~ 254 0
34 LEDA 51016 Sy1 14 17 00.8224797456 +44 56 06.336360024   16.93 16.63     ~ 275 0
35 2MASS J14294306+4747262 Sy1 14 29 43.0739786592 +47 47 26.217623904   17.29 16.97     ~ 195 0
36 CSO 466 QSO 14 32 04.6001714712 +39 44 39.040774080   17.00 16.88     ~ 33 0
37 [VV2000] J151535.1+480531 QSO 15 15 35.2529901792 +48 05 30.542124300   16.85 16.62     ~ 30 0
38 LEDA 54782 Sy1 15 21 14.2570766112 +22 27 43.827693336   16.09 16.09     ~ 142 0
39 ICRF J154743.5+205216 Sy1 15 47 43.5376371336 +20 52 16.612810320   16.80 16.69 15.70   ~ 521 1
40 LEDA 56356 Sy1 15 54 44.5798403976 +08 22 21.412038576   16.38 16.16     ~ 132 0
41 Ton 256 Sy1 16 14 13.2050129832 +26 04 16.221218880   16.06 16.50     ~ 282 1
42 IRAS F16172+4432 QSO 16 18 49.2461224272 +44 25 17.255712288   17.37 17.01     ~ 35 0
43 RX J1830.3+7312 Sy1 18 30 23.1622671336 +73 13 10.710219756   15.5 15.5     ~ 50 0
44 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
45 4C 31.63 BLL 22 03 14.9756830008 +31 45 38.269473228   15.85 15.58 14.33   ~ 523 1
46 2MASS J22360767+1343554 Sy1 22 36 07.6824548136 +13 43 55.360914636   16.48 16.34     ~ 170 0

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