2005ApJ...622..129S


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.20CET15:21:16

2005ApJ...622..129S - Astrophys. J., 622, 129-135 (2005/March-3)

Lag-luminosity relationship for interband lags between variations in B, V, R, and I bands in active galactic nuclei.

SERGEEV S.G., DOROSHENKO V.T., GOLUBINSKIY Y.V., MERKULOVA N.I. and SERGEEVA E.A.

Abstract (from CDS):

We determine interband lags between variations in the B band and variations in the V, R, and I bands for 14 active galactic nuclei observed at the Crimean Astrophysical Observatory. The computed lags range from tenths of a day to several days, and it is positive (that is, V, R, and I bands lag behind the B band) in most cases, except for a few cases for the V filter. In some cases, the lag is greater than zero, with more than 3 σ confidence. The lag is systematically less for the V filter than for the red filters, and the lag determined from the cross-correlation function (CCF) centroid is systematically greater than the lag determined from the CCF peak. We find that the lag scales with luminosity as Lb, where b~0.4-0.5. We attribute this lag to the light time travel effect, so it reflects the geometrical size of the region that emits optical continuum. We consider a model in which optical emission is mainly reprocessed emission that arises in the accretion disk heated by an X-ray source above the disk.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Nuclei - Galaxies: Photometry - Galaxies: Seyfert

VizieR on-line data: <Available at CDS (J/ApJ/622/129): objects.dat table1.dat>

Simbad objects: 14

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Number of rows : 14

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 Mrk 335 Sy1 00 06 19.5371542746 +20 12 10.617456059   14.19 13.85     ~ 1072 0
2 Mrk 1095 Sy1 05 16 11.4093760763 -00 08 59.158774578   14.30 13.92     ~ 760 1
3 UGC 3374 Sy1 05 54 53.6085733702 +46 26 21.625853190   15.37 14.62     ~ 452 2
4 IC 450 Sy1 06 52 12.32333 +74 25 37.2376   15.16 14.19     ~ 492 1
5 Mrk 79 Sy1 07 42 32.8212778143 +49 48 34.787882233   14.74 14.27     ~ 614 1
6 1E 0754+39.3 Sy1 07 58 00.0522824781 +39 20 28.996517557   14.74 14.36 14.4   ~ 89 0
7 NGC 3227 GiP 10 23 30.57 +19 51 54.3   12.61 11.79     ~ 1505 2
8 NGC 3516 Sy1 11 06 47.4596406816 +72 34 07.189563769   13.12 12.40     ~ 1396 0
9 NGC 4051 Sy1 12 03 09.6098828919 +44 31 52.693714606   11.08 12.92 9.94   ~ 1963 1
10 NGC 4151 Sy1 12 10 32.5771747733 +39 24 21.057727323   12.18 11.48     ~ 3333 2
11 NGC 5548 Sy1 14 17 59.5401093128 +25 08 12.600227883   14.35 13.73     ~ 2349 0
12 ICRF J184208.9+794617 Sy1 18 42 08.9910523393 +79 46 17.129210139   16.06 15.38     ~ 1196 0
13 Mrk 509 Sy1 20 44 09.7504131334 -10 43 24.724854084   13.35 13.12 10.7   ~ 1103 0
14 NGC 7469 Sy1 23 03 15.674 +08 52 25.28 12.60 13.00 12.34     ~ 1856 3

    Equat.    Gal    SGal    Ecl

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2020.01.20-15:21:16

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