SIMBAD references

2020ApJ...900...58Y - Astrophys. J., 900, 58-58 (2020/September-1)

Dust reverberation mapping in distant quasars from (optical) and mid-infrared imaging surveys.

YANG Q., SHEN Y., LIU X., AGUENA M., ANNIS J., AVILA S., BANERJI M., BERTIN E., BROOKS D., BURKE D., CARNERO ROSELL A., CARRASCO KIND M., DA COSTA L., DE VICENTE J., DESAI S., DIEHL H.T., DOEL P., FLAUGHER B., FOSALBA P., FRIEMAN J., GARCIA-BELLIDO J., GERDES D., GRUEN D., GRUENDL R., GSCHWEND J., GUTIERREZ G., HINTON S., HOLLOWOOD D.L., HONSCHEID K., KUROPATKIN N., MAIA M., MARCH M., MARSHALL J., MARTINI P., MELCHIOR P., MENANTEAU F., MIQUEL R., PAZ-CHINCHON F., PLAZAS MALAGON A., ROMER K., SANCHEZ E., SCARPINE V., SCHUBNELL M., SERRANO S., SEVILLA I., SMITH M., SUCHYTA E., TARLE G., VARGA T.N. and WILKINSON R.

Abstract (from CDS):

The size of the dust torus in active galactic nuclei (AGNs) and their high-luminosity counterparts, quasars, can be inferred from the time delay between UV/optical accretion disk continuum variability and the response in the mid-infrared (MIR) torus emission. This dust reverberation mapping (RM) technique has been successfully applied to ∼70 z <= 0.3 AGNs and quasars. Here we present first results of our dust RM program for distant quasars covered in the Sloan Digital Sky Survey Stripe 82 region combining ∼20 yr ground-based optical light curves with 10 yr MIR light curves from the WISE satellite. We measure a high-fidelity lag between W1 band (3.4 µm) and g band for 587 quasars over 0.3 <= z <= 2 (<z>∼0.8) and two orders of magnitude in quasar luminosity. They tightly follow (intrinsic scatter ∼0.17 dex in lag) the IR lag-luminosity relation observed for z < 0.3 AGNs, revealing a remarkable size-luminosity relation for the dust torus over more than four decades in AGN luminosity, with little dependence on additional quasar properties such as Eddington ratio and variability amplitude. This study motivates further investigations in the utility of dust RM for cosmology and strongly endorses a compelling science case for the combined 10 yr Vera C. Rubin Observatory Legacy Survey of Space and Time (optical) and 5 yr Nancy Grace Roman Space Telescope 2 µm light curves in a deep survey for low-redshift AGN dust RM with much lower luminosities and shorter, measurable IR lags. The compiled optical and MIR light curves for 7384 quasars in our parent sample are made public with this work.

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

Journal keyword(s): Active galactic nuclei - Quasars - Dust continuum emission - Reverberation mapping

VizieR on-line data: <Available at CDS (J/ApJ/900/58): qsos.dat table3.dat table4.dat>

Simbad objects: 588

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2020ApJ...900...58Y and select 'bookmark this link' or equivalent in the popup menu