OzDES Reverberation Mapping Program: Hβ lags from the 6-yr survey
Abstract
Reverberation mapping measurements have been used to constrain the relationship between the size of the broad-line region and luminosity of active galactic nuclei (AGN). This R-L relation is used to estimate single-epoch virial black hole masses, and has been proposed to use to standardize AGN to determine cosmological distances. We present reverberation measurements made with Hβ from the 6-yr Australian Dark Energy Survey (OzDES) Reverberation Mapping Program. We successfully recover reverberation lags for eight AGN at 0.12 < z < 0.71, probing higher redshifts than the bulk of Hβ measurements made to date. Our fit to the R-L relation has a slope of α = 0.41 ± 0.03 and an intrinsic scatter of σ = 0.23 ± 0.02 dex. The results from our multi-object spectroscopic survey are consistent with previous measurements made by dedicated source-by-source campaigns, and with the observed dependence on accretion rate. Future surveys, including LSST, TiDES, and SDSS-V, which will be revisiting some of our observed fields, will be able to build on the results of our first-generation multi-object reverberation mapping survey.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- April 2023
- DOI:
- 10.1093/mnras/stad145
- arXiv:
- arXiv:2210.03977
- Bibcode:
- 2023MNRAS.520.2009M
- Keywords:
-
- galaxies: active;
- galaxies: nuclei;
- quasars: emission lines;
- quasars: general;
- quasars: supermassive black holes;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- Published in MNRAS