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OzDES reverberation mapping program: Lag recovery reliability for 6-yr C iv analysis

Penton, A
•
Malik, U
•
Davis, T M
altro
Lewis, G
2022
  • journal article

Periodico
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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.
DOI
10.1093/mnras/stab3027
WOS
WOS:000756700900004
Archivio
https://hdl.handle.net/11368/3004979
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85122290112
https://academic.oup.com/mnras/article/509/3/4008/6409154
Diritti
open access
license:copyright editore
license:digital rights management non definito
license uri:iris.pri02
license uri:iris.pri00
FVG url
https://arts.units.it/request-item?handle=11368/3004979
Soggetti
  • galaxies: active

  • quasars: emission lin...

  • quasars: general

  • Astrophysics - Astrop...

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