Year: 2022
Type: article
Abstract: Context.One of the novelties ofGaiadata release 3 (DR3) with respect to the previous data releases is the publication of the multiband light curves for about 1 million active galactic nuclei (AGN) and of the values of some parameters characterising their variability properties. Aims.The goal of this work is the creation of a catalogue of variable AGN, the selection of which is based onGaiadata only. Methods.We first present the implementation of the methods used to estimate the variability parameters within the framework of a specific object study module for AGN (SOS-AGN). We then describe the selection procedure that led to the definition of the high-purityGaiavariable AGN sample and analyse the properties of the selected sources. We started from a sample of millions of sources, which were identified as AGN candidates using 11 different classifiers based on variability processing. Because the focus is on the variability properties, we first defined some pre-requisites in terms of number of data points in theGband and mandatory variability parameters. A series of filters was then applied using onlyGaiadata and theGaiaCelestial Reference Frame 3 (Gaia-CRF3) sample as a reference. Results.The resultingGaiaAGN variable sample, named GLEAN, contains about 872 000 objects, more than 21 000 of which are new identifications. We checked for the presence of contaminants by cross-matching the selected sources with a variety of galaxies and stellar catalogues. The completeness of GLEAN with respect to the variable AGN in the last Sloan Digital Sky Survey (SDSS) quasar catalogue is ∼47%, while that based on the variable AGN of theGaia-CRF3 sample is ∼51%. The set of filters applied to the sources selected by SOS-AGN to increase the sample purity reduced the source number by about 37%. From both a comparison with other AGN catalogues and an investigation of possible contaminants, we conclude that purity can be expected to be above 95%. The multi-wavelength properties of these sources are investigated. In particular, we estimate that ∼4% of them are radio-loud. We finally explore the possibility to evaluate the time-lags between the flux variations of the multiple images of strongly lensed quasars, and show one case.
Source: Astronomy and Astrophysics
Authors: Maria I. Carnerero, Claudia M. Raiteri, Lorenzo Rimoldini, Deborah Busonero, Enrico Licata, Nami Mowlavi, Isabelle Lecoeur-Taïbi, Marc Audard, Berry Holl, Panagiotis Gavras, Krzysztof Nienartowicz, Grégory Jevardat de Fombelle, Ruth Carballo, Gisella Clementini, Ludovic Delchambre, Sergei Klioner, Mario G. Lattanzi, Laurent Eyer
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,580
Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Alfred P. Sloan Foundation, Yale University, Carnegie Institution of Washington, Vanderbilt University, Ohio State University, California Institute of Technology, University of Washington, Johns Hopkins University, Carnegie Mellon University, University of Notre Dame, University of Portsmouth, New Mexico State University, UK Space Agency, European Space Agency, York University, University of Cambridge, University of Leicester, University College London, University of Oxford, European Commission, European Science Foundation, University of Edinburgh, University of Bristol, European Cooperation in Science and Technology, Science Foundation Ireland, Agence Nationale de la Recherche, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Swedish National Space Agency, Academy of Finland, Generalitat de Catalunya, Centre National d’Etudes Spatiales, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Ministério da Ciência, Tecnologia e Inovação, Magyar Tudományos Akadémia, Agenzia Spaziale Italiana, Liverpool John Moores University, Magnus Ehrnroothin Säätiö, Javna Agencija za Raziskovalno Dejavnost RS, Tel Aviv University, Ministerstwo Edukacji i Nauki, Centre National de la Recherche Scientifique, Ministerio de Ciencia e Innovación, Istituto Nazionale di Astrofisica, Universidad Nacional Autónoma de México, Universitat de Barcelona, Barcelona Supercomputing Center, Xunta de Galicia, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Max-Planck-Institut für Astrophysik, Max-Planck-Institut für Astronomie, Instituto de Astrofísica de Canarias, Office of Science, University of Colorado Boulder, Observatoire de Paris, Université de Recherche Paris Sciences et Lettres, Science and Technology Facilities Council, Leibniz-Gemeinschaft, Fundação para a Ciência e a Tecnologia, European Regional Development Fund, Agencia Estatal de Investigación, Institut National de Physique Nucléaire et de Physique des Particules, Institut de Ciències del Cosmos, Zentrum für Informationsdienste und Hochleistungsrechnen, Technische Universität Dresden, HORIZON EUROPE Excellent Science, European Social Fund, Lawrence Berkeley National Laboratory, FP7 Space
Awards: G1011896320, G1044294895, Modelling the Milky Way in the Gaia era, G1134280225, G1175115578, G119750206, Astrophysics and physics of the atmosphere, G1281533792, The build-up and fate of self-gravitating systems in the Universe, G1363830640, G1483381719, G1503946628, G1515654824, G1516346500, G1577046871, G1622653872, G1650155998, G1664827575, G1690109813, G1763632427, G1855990336, G1888088267, G192455069, Gaia-CU9 (Edinburgh component), G1953547991, G1953887145, G195474297, Large N quantum fields, strings, and geometry, G1998765129, G2064873908, G2252692511, G2262748287, G2309174360, G235309764, G2393405324, G2419240272, G2424882271, G2426432956, Resolvendo alguns dos mais antigos problemas em evolução estelar com fotometria ultra-precisa obtida a partir de satélites, G2436365243, G2601397997, Secular Evolution of Galaxies, G2657530899, Paris Sciences et Lettres, G2660406951, G2700499902, G274581676, G2789713643, G2794879839, G2803282105, G2934600774, G3005324705, G300979063, G3010527862, G3056189879, G3089118260, G3132380729, G3155143299, G3163935302, Instituto de Astrofísica e Ciências do Espaço, G3222096693, G3275705967, G3283093266, G3334822623, Instituto de Astrofísica e Ciências do Espaço, G3452655474, G3480869486, G3502424754, G367317414, G3681454997, G3746636746, G3770584748, G3780874795, G3810062594, G3840324753, G3870194508, G3876637791, G3891694003, Space AsteroSeismology & RR Lyrae stars, G3978510197, G4042783231, G410217684, G410571670, G4190806336, G4192228184, G4201897825, G4204394816, G4214336276, G4221417635, G4238086233, G425668148, G430777504, Unlocking the potential of Cepheids as primary distance calibrators, G4317403835, G4342269745, G434337789, Our Galaxy at full HD, G4368644042, G451917667, G45561476, G4613725268, G4656594441, G471331628, G477139806, G4834903470, The Milky Way disc formation in the Gaia era, Planetary system in scattered light, G4916880420, G491858407, G4930006217, G5080475149, G5107367738, Gaia European Network for Improved data User Services, Gaia Research for European Astronomy Training - ITN, G5195188938, G5199606742, G5224927334, Gaia-CU9 2019-2024 (Bristol element), G526596183, G532334778, G5346464535, Centro de Astrofísica e Gravitação, G5385376234, G5421974903, G5453192310, G5454278309, Sem título, G5498856803, G5539308778, G5577742364, G5728085972, G576198638, Innovative Scientific Data Exploration and Exploitation Applications for Space Sciences, G5845768719, G585647751, G5915139351, G5967599077, Catalogue raisonné des manuscrits orientaux illustrés dans le Musée d'Histoire de Berne., G6099419538, G612732458, G6218905885, G6255773888, G6258374248, G6268741103, G6298273575, G6358953966, G6531329289, Gaia CU9 2019-2024 (Edinburgh element), G6622646236, G662651173, G6668668827, G6676574567, G6723180968, G6791753710, G6880237735, G6943664901, G6993848981, G7084143925, G7096924396, Capture, processing and trafficking of particulate and soluble antigen in the airways of mice, G7237323555, G7240651115, G7249295867, G7321284446, G7378785347, G7397826953, G7463224461, Small Bodies: Near and Far, G7736885172, G7758356103, Measuring Hubble’s Constant to 1% With Pulsating Stars, G7821525472, G782245399, G790757258, G7965899483, G7978639148, G8096887654, G8150559909, G8220855151, G8248744945, G8329112179, UK Gaia CU9: Delivering Gaia to the Community: 2019-2024, G8542331449, Galactic Dark Matter, G8723605523, G87242835, G8787842239, G8888022036, G941722769, G954337503, G963397759, G99296377
OpenAlex ID: W4289525403