2020ApJ...902...74W

Query : 2020ApJ...902...74W

2020ApJ...902...74W - Astrophys. J., 902, 74-74 (2020/October-2)

Space telescope and optical reverberation mapping project. XII. Broad-line region modeling of NGC 5548.

WILLIAMS P.R., PANCOAST A., TREU T., BREWER B.J., PETERSON B.M., BARTH A.J., MALKAN M.A., DE ROSA G., HORNE K., KRISS G.A., ARAV N., BENTZ M.C., CACKETT E.M., DALLA BONTA E., DEHGHANIAN M., DONE C., FERLAND G.J., GRIER C.J., KAASTRA J., KARA E., KOCHANEK C.S., MATHUR S., MEHDIPOUR M., POGGE R.W., PROGA D., VESTERGAARD M., WATERS T., ADAMS S.M., ANDERSON M.D., AREVALO P., BEATTY T.G., BENNERT V.N., BIGLEY A., BISOGNI S., BORMAN G.A., BOROSON T.A., BOTTORFF M.C., BRANDT W.N., BREEVELD A.A., BROTHERTON M., BROWN J.E., BROWN J.S., CANALIZO G., CARINI M.T., CLUBB K.I., COMERFORD J.M., CORSINI E.M., CRENSHAW D.M., CROFT S., CROXALL K.V., DEASON A.J., DE LORENZO-CACERES A., DENNEY K.D., DIETRICH M., EDELSON R., EFIMOVA N.V., ELY J., EVANS P.A., FAUSNAUGH M.M., FILIPPENKO A.V., FLATLAND K., FOX O.D., GARDNER E., GATES E.L., GEHRELS N., GEIER S., GELBORD J.M., GONZALEZ L., GORJIAN V., GREENE J.E., GRUPE D., GUPTA A., HALL P.B., HENDERSON C.B., HICKS S., HOLMBECK E., HOLOIEN T.W.-S., HUTCHISON T., IM M., JENSEN J.J., JOHNSON C.A., JONER M.D., JONES J., KASPI S., KELLY P.L., KENNEA J.A., KIM M., KIM S., KIM S.C., KING A., KLIMANOV S.A., KNIGGE C., KRONGOLD Y., LAU M.W., LEE J.C., LEONARD D.C., LI M., LIRA P., LOCHHAAS C., MA Z., MacINNIS F., MANNE-NICHOLAS E.R., MAUERHAN J.C., McGURK R., McHARDY I.M., MONTUORI C., MORELLI L., MOSQUERA A., MUDD D., MULLER-SANCHEZ F., NAZAROV S.V., NORRIS R.P., NOUSEK J.A., NGUYEN M.L., OCHNER P., OKHMAT D.N., PAPADAKIS I., PARKS J.R., PEI L., PENNY M.T., PIZZELLA A., POLESKI R., POTT J.-U., RAFTER S.E., RIX H.-W., RUNNOE J., SAYLOR D.A., SCHIMOIA J.S., SCOTT B., SERGEEV S.G., SHAPPEE B.J., SHIVVERS I., SIEGEL M., SIMONIAN G.V., SIVIERO A., SKIELBOE A., SOMERS G., SPENCER M., STARKEY D., STEVENS D.J., SUNG H.-I., TAYAR J., TEJOS N., TURNER C.S., UTTLEY P., VAN SADERS J., VAUGHAN S.A., VICAN L., VILLANUEVA S., VILLFORTH C., WEISS Y., WOO J.-H., YAN H., YOUNG S., YUK H., ZHENG W., ZHU W. and ZU Y.

Abstract (from CDS):

We present geometric and dynamical modeling of the broad line region (BLR) for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The data set includes photometric and spectroscopic monitoring in the optical and ultraviolet, covering the Hβ, C IV, and Lyα broad emission lines. We find an extended disk-like Hβ BLR with a mixture of near-circular and outflowing gas trajectories, while the C IV and Lyα BLRs are much less extended and resemble shell-like structures. There is clear radial structure in the BLR, with C IV and Lyα emission arising at smaller radii than the Hβ emission. Using the three lines, we make three independent black hole mass measurements, all of which are consistent. Combining these results gives a joint inference of log10(MBH/M☉)=7.64–0.18+0.21. We examine the effect of using the V band instead of the UV continuum light curve on the results and find a size difference that is consistent with the measured UV-optical time lag, but the other structural and kinematic parameters remain unchanged, suggesting that the V band is a suitable proxy for the ionizing continuum when exploring the BLR structure and kinematics. Finally, we compare the Hβ results to similar models of data obtained in 2008 when the active galactic nucleus was at a lower luminosity state. We find that the size of the emitting region increased during this time period, but the geometry and black hole mass remained unchanged, which confirms that the BLR kinematics suitably gauge the gravitational field of the central black hole.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Active galaxies - Active galactic nuclei - Reverberation mapping - Seyfert galaxies

Simbad objects: 3

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Number of rows : 3
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 MCG+09-19-073 Sy1 11 25 36.1539761184 +54 22 57.113791824   17.06 16.47     ~ 311 0
2 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
3 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0

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