2018ApJ...854..107F

Query : 2018ApJ...854..107F

2018ApJ...854..107F - Astrophys. J., 854, 107-107 (2018/February-3)

Continuum reverberation mapping of the accretion disks in two Seyfert 1 galaxies.

FAUSNAUGH M.M., STARKEY D.A., HORNE K., KOCHANEK C.S., PETERSON B.M., BENTZ M.C., DENNEY K.D., GRIER C.J., GRUPE D., POGGE R.W., DE ROSA G., ADAMS S.M., BARTH A.J., BEATTY T.G., BHATTACHARJEE A., BORMAN G.A., BOROSON T.A., BOTTORFF M.C., BROWN J.E., BROWN J.S., BROTHERTON M.S., COKER C.T., CRAWFORD S.M., CROXALL K.V., EFTEKHARZADEH S., ERACLEOUS M., JONER M.D., HENDERSON C.B., HOLOIEN T.W.-S., HUTCHISON T., KASPI S., KIM S., KING A.L., LI M., LOCHHAAS C., MA Z., MacINNIS F., MANNE-NICHOLAS E.R., MASON M., MONTUORI C., MOSQUERA A., MUDD D., MUSSO R., NAZAROV S.V., NGUYEN M.L., OKHMAT D.N., ONKEN C.A., OU-YANG B., PANCOAST A., PEI L., PENNY M.T., POLESKI R., RAFTER S., ROMERO-COLMENERO E., RUNNOE J., SAND D.J., SCHIMOIA J.S., SERGEEV S.G., SHAPPEE B.J., SIMONIAN G.V., SOMERS G., SPENCER M., STEVENS D.J., TAYAR J., TREU T., VALENTI S., VAN SADERS J., VILLANUEVA S., VILLFORTH C., WEISS Y., WINKLER H. and ZHU W.

Abstract (from CDS):

We present optical continuum lags for two Seyfert 1 galaxies, MCG+08-11-011 and NGC 2617, using monitoring data from a reverberation mapping campaign carried out in 2014. Our light curves span the ugriz filters over four months, with median cadences of 1.0 and 0.6 days for MCG+08-11-011 and NGC 2617, respectively, combined with roughly daily X-ray and near-UV data from Swift for NGC 2617. We find lags consistent with geometrically thin accretion-disk models that predict a lag-wavelength relation of τ ∝ λ4/3. However, the observed lags are larger than predictions based on standard thin-disk theory by factors of 3.3 for MCG+08-11-011 and 2.3 for NGC 2617. These differences can be explained if the mass accretion rates are larger than inferred from the optical luminosity by a factor of 4.3 in MCG+08-11-011 and a factor of 1.3 in NGC 2617, although uncertainty in the SMBH masses determines the significance of this result. While the X-ray variability in NGC 2617 precedes the UV/optical variability, the long (2.6 day) lag is problematic for coronal reprocessing models.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): accretion, accretion disks - galaxies: individual: (MCG+08-11-011, NGC 2617) - galaxies: Seyfert

VizieR on-line data: <Available at CDS (J/ApJ/854/107): table1.dat table2.dat table3.dat table4.dat>

Simbad objects: 9

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Number of rows : 9
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 Z 232-3 Sy1 05 54 53.6080860768 +46 26 21.624853488   15.37 14.62     ~ 563 3
2 Z 235-30 Sy1 07 42 32.8210670808 +49 48 34.783809768   14.74 14.27     ~ 769 1
3 NGC 2617 Sy2 08 35 38.7981089496 -04 05 17.901104280   13.6   12.63 13.2 ~ 226 0
4 NGC 3783 Sy1 11 39 01.7096819040 -37 44 19.009642992   12.46 13.43 11.33 12.1 ~ 1765 1
5 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
6 NGC 4593 Sy1 12 39 39.4435107024 -05 20 39.034988448   13.95 13.15     ~ 1179 0
7 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0
8 NAME MR 2251-178 Sy1 22 54 05.8858611984 -17 34 55.402233708   14.99 14.36 15.12   ~ 467 4
9 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3

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