2018ApJ...862..123M

Query : 2018ApJ...862..123M

2018ApJ...862..123M - Astrophys. J., 862, 123-123 (2018/August-1)

Quasar accretion disk sizes from continuum reverberation mapping from the Dark Energy Survey.

MUDD D., MARTINI P., ZU Y., KOCHANEK C., PETERSON B.M., KESSLER R., DAVIS T.M., HOORMANN J.K., KING A., LIDMAN C., SOMMER N.E., TUCKER B.E., ASOREY J., HINTON S., GLAZEBROOK K., KUEHN K., LEWIS G., MACAULAY E., MOELLER A., O'NEILL C., ZHANG B., ABBOTT T.M.C., ABDALLA F.B., ALLAM S., BANERJI M., BENOIT-LEVY A., BERTIN E., BROOKS D., CARNERO ROSELL A., CAROLLO D., CARRASCO KIND M., CARRETERO J., CUNHA C.E., D'ANDREA C.B., DA COSTA L.N., DAVIS C., DESAI S., DOEL P., FOSALBA P., GARCIA-BELLIDO J., GAZTANAGA E., GERDES D.W., GRUEN D., GRUENDL R.A., GSCHWEND J., GUTIERREZ G., HARTLEY W.G., HONSCHEID K., JAMES D.J., KUHLMANN S., KUROPATKIN N., LIMA M., MAIA M.A.G., MARSHALL J.L., McMAHON R.G., MENANTEAU F., MIQUEL R., PLAZAS A.A., ROMER A.K., SANCHEZ E., SCHINDLER R., SCHUBNELL M., SMITH M., SMITH R.C., SOARES-SANTOS M., SOBREIRA F., SUCHYTA E., SWANSON M.E.C., TARLE G., THOMAS D., TUCKER D.L., WALKER A.R. (The DES Collaboration)

Abstract (from CDS):

We present accretion disk size measurements for 15 luminous quasars at 0.7 <= z <= 1.9 derived from griz light curves from the Dark Energy Survey. We measure the disk sizes with continuum reverberation mapping using two methods, both of which are derived from the expectation that accretion disks have a radial temperature gradient and the continuum emission at a given radius is well described by a single blackbody. In the first method we measure the relative lags between the multiband light curves, which provides the relative time lag between shorter and longer wavelength variations. From this, we are only able to constrain upper limits on disk sizes, as many are consistent with no lag the 2σ level. The second method fits the model parameters for the canonical thin disk directly rather than solving for the individual time lags between the light curves. Our measurements demonstrate good agreement with the sizes predicted by this model for accretion rates between 0.3 and 1 times the Eddington rate. Given our large uncertainties, our measurements are also consistent with disk size measurements from gravitational microlensing studies of strongly lensed quasars, as well as other photometric reverberation mapping results, that find disk sizes that are a factor of a few (∼3) larger than predictions.

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

Journal keyword(s): accretion, accretion disks - galaxies: active - quasars: general

VizieR on-line data: <Available at CDS (J/ApJ/862/123): table1.dat table2.dat>

Nomenclature: Table 3: [MMZ2018] DES JHHMM+DDMM N=15.

Simbad objects: 19

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Number of rows : 19
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 J021500.23-043007.5 QSO 02 15 00.2301497640 -04 30 07.592779476           ~ 10 0
2 SDSS J021514.28-053321.4 QSO 02 15 14.2854274968 -05 33 21.499261344           ~ 9 0
3 SDSS J021952.15-040919.9 QSO 02 19 52.1582976120 -04 09 19.961407008           ~ 24 0
4 SDSS J022108.59-061753.3 QSO 02 21 08.6038288320 -06 17 53.368533672           ~ 6 0
5 SDSS J022344.57-064039.2 QSO 02 23 44.571 -06 40 39.21           ~ 2 0
6 SDSS J022436.17-065912.5 QSO 02 24 36.1745285760 -06 59 12.429679488           ~ 2 0
7 SDSS J022440.72-043657.9 QSO 02 24 40.7245529016 -04 36 57.888788256   19.90   19.7   ~ 19 0
8 SDSS J024133.65-010724.3 QSO 02 41 33.6543220776 -01 07 24.351960504           ~ 8 0
9 SDSS J024159.74-010512.5 QSO 02 41 59.7432946872 -01 05 12.507733212           ~ 8 0
10 SDSS J024357.90-011330.5 QSO 02 43 57.9098552256 -01 13 30.561503448   20.33 20.11     ~ 24 0
11 SDSS J024753.20-002137.8 QSO 02 47 53.2046310888 -00 21 37.958417316   20.24 19.92     ~ 19 0
12 [VV2006] J024854.8+001055 QSO 02 48 54.8046520728 +00 10 53.884100676   19.72 19.32     ~ 35 1
13 US 3197 QSO 02 49 18.2485290912 -00 17 31.184117088   19.73 19.41     ~ 30 0
14 [VV2006] J025318.7+000415 QSO 02 53 18.7720910880 +00 04 14.026546740   20.61 20.26     ~ 26 0
15 DES J033719.99-262418.8 QSO 03 37 20.0064645216 -26 24 18.812110104           ~ 3 0
16 NGC 2617 Sy2 08 35 38.7981089496 -04 05 17.901104280   13.6   12.63 13.2 ~ 226 0
17 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
18 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0
19 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3

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