Dust Reverberation Mapping in Distant Quasars from Optical and Mid-Infrared Imaging Surveys
Autor: | Yang, Qian, Shen, Yue, Liu, Xin, Aguena, Michel, Annis, James, Avila, Santiago, Banerji, Manda, Bertin, Emmanuel, Brooks, David, Burke, David, Rosell, Aurelio Carnero, Kind, Matias Carrasco, da Costa, Luiz, De Vicente, Juan, Desai, Shantanu, Diehl, H. Thomas, Doel, Peter, Flaugher, Brenna, Fosalba, Pablo, Frieman, Joshua, Garcia-Bellido, Juan, Gerdes, David, Gruen, Daniel, Gruendl, Robert, Gschwend, Julia, Gutierrez, Gaston, Hinton, Samuel, Hollowood, Devon L., Honscheid, Klaus, Kuropatkin, Nikolay, Maia, Marcio, March, Marisa, Marshall, Jennifer, Martini, Paul, Melchior, Peter, Menanteau, Felipe, Miquel, Ramon, Paz-Chinchon, Francisco, Malagón, Andres Plazas, Romer, Kathy, Sanchez, Eusebio, Scarpine, Vic, Schubnell, Michael, Serrano, Santiago, Sevilla, Ignacio, Smith, Mathew, Suchyta, Eric, Tarle, Gregory, Varga, Tamas Norbert, Wilkinson, Reese |
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Rok vydání: | 2020 |
Předmět: | |
Druh dokumentu: | Working Paper |
DOI: | 10.3847/1538-4357/aba59b |
Popis: | The size of the dust torus in Active Galactic Nuclei (AGN) and their high-luminosity counterparts, quasars, can be inferred from the time delay between UV/optical accretion disk continuum variability and the response in the mid-infrared (MIR) torus emission. This dust reverberation mapping (RM) technique has been successfully applied to $\sim 70$ $z\lesssim 0.3$ AGN and quasars. Here we present first results of our dust RM program for distant quasars covered in the SDSS Stripe 82 region combining $\sim 20$-yr ground-based optical light curves with 10-yr MIR light curves from the WISE satellite. We measure a high-fidelity lag between W1-band (3.4 $\mu$m) and $g$ band for 587 quasars over $0.3\lesssim z\lesssim 2$ ($\left Comment: Accepted for publication in ApJ |
Databáze: | arXiv |
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