Extreme variability quasars from the Sloan Digital Sky Survey and the Dark Energy Survey
| Autor: | Darren L. DePoy, Yue Shen, K. Honscheid, Carlos E. Cunha, Chris B. D'Andrea, J. Gschwend, Alistair R. Walker, Kevin Reil, A. Benoit-Lévy, Marcelle Soares-Santos, Felipe Menanteau, Marcio A. G. Maia, William Wester, J. Carretero, Nikolay Kuropatkin, Kyler Kuehn, David J. Brooks, Rafe Schindler, Shantanu Desai, Luiz N. da Costa, Eric Morganson, Aurelio Carnero Rosell, Richard G. McMahon, Mathew Smith, G. Gutierrez, Jennifer L. Marshall, Robert A. Gruendl, Juan Garcia-Bellido, Diego Capozzi, Manda Banerji, Michael Schubnell, V. Scarpine, David J. James, E. Buckley-Geer, Emmanuel Bertin, Marcos Lima, A. Roodman, Paul Martini, Molly E. C. Swanson, Erin S. Sheldon, Filipe B. Abdalla, Xin Liu, Andres Plazas Malagon, E. Suchyta, Peter Doel, E. J. Sanchez, Joshua A. Frieman, Steve Kuhlmann, Flavia Sobreira, Nick Rumbaugh, Daniel Gruen, M. Carrasco Kind |
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| Přispěvatelé: | Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DES, Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph] media_common.quotation_subject Astrophysics::High Energy Astrophysical Phenomena Population black hole physics galaxies: active FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Luminosity surveys quasars: general 0103 physical sciences Emission spectrum education 010303 astronomy & astrophysics STFC Astrophysics::Galaxy Astrophysics media_common Physics education.field_of_study Accretion (meteorology) 010308 nuclear & particles physics RCUK Astronomy and Astrophysics Quasar line: profiles Light curve Astrophysics - Astrophysics of Galaxies Redshift Space and Planetary Science Sky Astrophysics of Galaxies (astro-ph.GA) [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Astrophys.J. Astrophys.J., 2018, 854 (2), pp.160. ⟨10.3847/1538-4357/aaa9b6⟩ NASA Astrophysics Data System Capozzi, D & Dark Energy Survey Collaboration 2018, ' Extreme Variability Quasars from the Sloan Digital Sky Survey and the Dark Energy Survey ', The Astrophysical Journal, vol. 854, no. 2, pp. 160 . https://doi.org/10.3847/1538-4357/aaa9b6 Astrophys.J., 2018, 854 (2), pp.160. 〈10.3847/1538-4357/aaa9b6〉 |
| DOI: | 10.3847/1538-4357/aaa9b6⟩ |
| Popis: | We perform a systematic search for long-term extreme variability quasars (EVQs) in the overlapping Sloan Digital Sky Survey (SDSS) and 3-Year Dark Energy Survey (DES) imaging, which provide light curves spanning more than 15 years. We identified ~1000 EVQs with a maximum g band magnitude change of more than 1 mag over this period, about 10% of all quasars searched. The EVQs have L_bol~10^45-10^47 erg/s and L/L_Edd~0.01-1. Accounting for selection effects, we estimate an intrinsic EVQ fraction of ~30-50% among all g Comment: submitted to ApJ; comments welcome |
| Databáze: | OpenAIRE |
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