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OzDES Reverberation Mapping Program: Lag recovery reliability for 6-year CIV analysis
- Source :
- Mon.Not.Roy.Astron.Soc., Mon.Not.Roy.Astron.Soc., 2022, 509 (3), pp.4008-4023. ⟨10.1093/mnras/stab3027⟩, Digital.CSIC. Repositorio Institucional del CSIC, instname, Biblos-e Archivo. Repositorio Institucional de la UAM
- Publication Year :
- 2021
-
Abstract
- Penton, A. et al (DES Collaboration)<br />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.<br />The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MICINN under grants ESP2017-89838, PGC2018-094773, PGC2018-102021, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ciência e Tecnologia (INCT) do e-Universo (CNPq grant 465376/2014-2).
- Subjects :
- galaxies: active
quasars: emission lines
quasars: general
Astrophysics - Astrophysics of Galaxies
Lag
FOS: Physical sciences
01 natural sciences
emission lines [Quasars]
statistical analysis
(Galaxies:) Quasars: Emission Lines
0103 physical sciences
quasar
silver
AGN
010303 astronomy & astrophysics
Reliability (statistics)
Physics
[PHYS]Physics [physics]
general [quasars]
010308 nuclear & particles physics
) Quasars: Emission Lines [(Galaxies]
Física
Astronomy and Astrophysics
gold
(Galaxies:) Quasars: Supermassive Black Holes
Nuclei
Reliability engineering
emission line [quasars]
Space and Planetary Science
quality
Astrophysics of Galaxies (astro-ph.GA)
active [galaxies]
slope
Reverberation mapping
dispersion
galaxy
statistical
) Quasars: Supermassive Black Holes [(Galaxies]
Subjects
Details
- Language :
- English
- ISSN :
- 00358711
- Database :
- OpenAIRE
- Journal :
- Mon.Not.Roy.Astron.Soc., Mon.Not.Roy.Astron.Soc., 2022, 509 (3), pp.4008-4023. ⟨10.1093/mnras/stab3027⟩, Digital.CSIC. Repositorio Institucional del CSIC, instname, Biblos-e Archivo. Repositorio Institucional de la UAM
- Accession number :
- edsair.doi.dedup.....7f2338f58c3aed3efbb8388e5883ce55