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arXiv · 2101.06921

OzDES Reverberation Mapping Program: Lag recovery reliability for 6-year CIV analysis

Andrew Penton·Umang Malik·Tamara Davis·Paul Martini·Zhefu Yu·Rob Sharp·Christopher Lidman·Brad E. Tucker·Janie Hoormann·Michel Aguena·Sahar Allam·James Annis·Jacobo Asorey·David Bacon·Emmanuel Bertin·Sunayana Bhargava·David Brooks·Josh Calcino·Aurelio Carnero Rosell·Daniela Carollo·Matias Carrasco Kind·Jorge Carretero·Matteo Costanzi·Luiz da Costa·Maria Elidaiana da Silva Pereira·Juan De Vicente·H. Thomas Diehl·Tim Eifler·Spencer Everett·Ismael Ferrero·Pablo Fosalba·Josh Frieman·Juan Garcia-Bellido·Enrique Gaztanaga·David Gerdes·Daniel Gruen·Robert Gruendl·Julia Gschwend·Gaston Gutierrez·Samuel Hinton·Devon L. Hollowood·Klaus Honscheid·David James·Alex Kim·Kyler Kuehn·Nikolay Kuropatkin·Marcio Maia·Jennifer Marshall·Felipe Menanteau·Ramon Miquel·Anais Möller·Robert Morgan·Antonella Palmese·Francisco Paz-Chinchon·Andrés Plazas Malagón·Kathy Romer·Eusebio Sanchez·Vic Scarpine·Daniel Scolnic·Santiago Serrano·Mathew Smith·Eric Suchyta·Molly Swanson·Gregory Tarle·Chun-Hao To·Syed Uddin·Tamas Norbert Varga·William Wester·Reese Wilkinson
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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 customisable simulations that mimic the characteristics of each source in the OzDES sample. These characteristics include: the variability in the photometric and spectroscopic lightcurves, the measurement uncertainties, and the observational cadence. By simulating the sources in the OzDES sample that contain the CIV 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 $1\sigma$ for each of the three quality samples, with the gold standard having the lowest dispersion with a recovered a R-L relation slope of $0.454\pm 0.016$ with an input slope of 0.47. Future work will apply these methods to the entire OzDES sample of 771 AGN.

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Andrew Penton, Umang Malik, Tamara Davis, Paul Martini, Zhefu Yu, Rob Sharp, Christopher Lidman, Brad E. Tucker, Janie Hoormann, Michel Aguena, Sahar Allam, James Annis, Jacobo Asorey, David Bacon, Emmanuel Bertin, Sunayana Bhargava, David Brooks, Josh Calcino, Aurelio Carnero Rosell, Daniela Carollo, Matias Carrasco Kind, Jorge Carretero, Matteo Costanzi, Luiz da Costa, Maria Elidaiana da Silva Pereira, Juan De Vicente, H. Thomas Diehl, Tim Eifler, Spencer Everett, Ismael Ferrero, Pablo Fosalba, Josh Frieman, Juan Garcia-Bellido, Enrique Gaztanaga, David Gerdes, Daniel Gruen, Robert Gruendl, Julia Gschwend, Gaston Gutierrez, Samuel Hinton, Devon L. Hollowood, Klaus Honscheid, David James, Alex Kim, Kyler Kuehn, Nikolay Kuropatkin, Marcio Maia, Jennifer Marshall, Felipe Menanteau, Ramon Miquel, Anais Möller, Robert Morgan, Antonella Palmese, Francisco Paz-Chinchon, Andrés Plazas Malagón, Kathy Romer, Eusebio Sanchez, Vic Scarpine, Daniel Scolnic, Santiago Serrano, Mathew Smith, Eric Suchyta, Molly Swanson, Gregory Tarle, Chun-Hao To, Syed Uddin, Tamas Norbert Varga, William Wester, Reese Wilkinson. 2021-01-18. OzDES Reverberation Mapping Program: Lag recovery reliability for 6-year CIV analysis. https://doi.org/10.1093/mnras%2Fstab3027

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