Penton, A;
Malik, U;
Davis, TM;
Martini, P;
Yu, Z;
Sharp, R;
Lidman, C;
... Lewis, G; + view all
(2022)
OzDES reverberation mapping program: Lag recovery reliability for 6-yr C iv analysis.
Monthly Notices of the Royal Astronomical Society
, 509
(3)
pp. 4008-4023.
10.1093/mnras/stab3027.
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Abstract
We present the statistical methods that have been developed to analyse the OzDES reverberation mapping sample. To perform this statistical analysis we have created a suite of customizable simulations that mimic the characteristics of each source in the OzDES sample. These characteristics include: the variability in the photometric and spectroscopic light curves, the measurement uncertainties, and the observational cadence. By simulating the sources in the OzDES sample that contain the C iv emission line, we developed a set of criteria that rank the reliability of a recovered time-lag depending on the agreement between different recovery methods, the magnitude of the uncertainties, and the rate at which false positives were found in the simulations. These criteria were applied to simulated light curves and these results used to estimate the quality of the resulting Radius-Luminosity relation. We grade the results using three quality levels (gold, silver, and bronze). The input slope of the R-L relation was recovered within 1σ for each of the three quality samples, with the gold standard having the lowest dispersion with a recovered a R-L relation slope of 0.454 ± 0.016 with an input slope of 0.47. Future work will apply these methods to the entire OzDES sample of 771 AGN.
| Type: | Article |
|---|---|
| Title: | OzDES reverberation mapping program: Lag recovery reliability for 6-yr C iv analysis |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stab3027 |
| Publisher version: | https://doi.org/10.1093/mnras/stab3027 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | galaxies: active, quasars: emission lines, quasars: general |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10142058 |
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