2017ApJ...846L...7S

Query : 2017ApJ...846L...7S

2017ApJ...846L...7S - Astrophys. J., 846, L7-L7 (2017/September-1)

Mid-infrared variability of changing-look AGNs.

SHENG Z., WANG T., JIANG N., YANG C., YAN L., DOU L. and PENG B.

Abstract (from CDS):

It is known that some active galactic nuclei (AGNs) transit from Type 1 to Type 2 or vice versa. There are two explanations for the so-called changing-look AGNs: one is the dramatic change of the obscuration along the line of sight, and the other is the variation of accretion rate. In this Letter, we report the detection of large amplitude variations in the mid-infrared luminosity during the transitions in 10 changing-look AGNs using the Wide-field Infrared Survey Explorer (WISE) and newly released Near-Earth Object WISE Reactivation data. The mid-infrared light curves of 10 objects echo the variability in the optical band with a time lag expected for dust reprocessing. The large variability amplitude is inconsistent with the scenario of varying obscuration, rather it supports the scheme of dramatic change in the accretion rate.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): accretion, accretion disks - galaxies: active - galaxies: Seyfert - infrared: galaxies - infrared: galaxies

Simbad objects: 25

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Number of rows : 25
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 SDSS J002311.05+003517.4 Sy1 00 23 11.0604554688 +00 35 17.528496792   20.14 19.80     ~ 67 0
2 [VV2003c] J012648.1-083948 Sy1 01 26 48.0892245120 -08 39 48.056230224   19.27 18.81     ~ 25 0
3 2MASS J01595763+0033105 Sy1 01 59 57.6419121888 +00 33 10.497849444   20.31 19.66     ~ 109 0
4 Z 387-34 Sy1 02 06 15.9896281128 -00 17 29.221733688   15.90 15.50 10.3   ~ 405 0
5 NGC 863 Sy2 02 14 33.5604714720 -00 46 00.181845336   14.48 13.81 17.9   ~ 770 0
6 SDSS J022556.07+003026.7 QSO 02 25 56.077 +00 30 26.72   20.08 19.92     ~ 33 0
7 SDSS J022652.23-003916.4 QSO 02 26 52.240 -00 39 16.50   20.74 20.43     ~ 27 0
8 LEDA 1033399 Sy1 03 53 01.0243052640 -06 23 26.372104800   18.15 17.57 16.52   ~ 26 0
9 LEDA 3422317 Sy1 08 13 19.3272031560 +46 08 49.743978000   18.20 17.54     ~ 46 0
10 NGC 2617 Sy2 08 35 38.7981089496 -04 05 17.901104280   13.6   12.63 13.2 ~ 226 0
11 2E 2050 Sy1 08 47 48.2784531048 +18 24 39.964651092   18.00 17.57     ~ 24 0
12 2MASX J09090233+1330196 Sy1 09 09 02.3576706432 +13 30 19.458470664   18.50 17.97     ~ 21 0
13 Z 35-17 Sy1 09 38 12.2649651984 +07 43 39.952926048   17.16 16.49     ~ 39 0
14 1WGA J0948.6+4030 Sy1 09 48 38.4270615816 +40 30 43.868269404   17.55 17.03     ~ 40 0
15 2MASS J10022021+4509276 QSO 10 02 20.1869093184 +45 09 27.291239676   19.58 19.26     ~ 34 0
16 2MASS J10115298+5442063 Sy1 10 11 52.9792003320 +54 42 06.373633896   18.62 18.31     ~ 53 0
17 2MASS J10215235+4645158 Sy1 10 21 52.3536589752 +46 45 15.701576328   18.35 18.03     ~ 36 0
18 QSO J1305-1033 Bla 13 05 33.0150535680 -10 33 19.430383680   15.18 15.23 14.46   ~ 624 1
19 2MASS J13245730+4802412 Sy1 13 24 57.2945003856 +48 02 41.349518700   19.09 18.72     ~ 35 0
20 2MASX J15450754+1709510 Sy1 15 45 07.5220900224 +17 09 50.910619572   17.81 17.29     ~ 29 0
21 SDSS J155440.25+362952.0 QSO 15 54 40.2638373096 +36 29 51.977032152           ~ 29 0
22 FIRST J214613.3+000930 QSO 21 46 13.3095864888 +00 09 30.768826176   20.84 20.57     ~ 35 0
23 SDSS J225240.37+010958.7 QSO 22 52 40.374 +01 09 58.71   20.51 20.31     ~ 33 0
24 SDSS J233317.38-002303.4 QSO 23 33 17.3860168920 -00 23 03.540032124   21.43 20.82     ~ 34 0
25 [VV2003c] J233603.0+001728 Sy1 23 36 02.9868147432 +00 17 28.773473892   20.18 19.66     ~ 26 0

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