Browsing Institutt for teoretisk astrofysikk by Author "Yang, Qian"

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  • Dwarf AGNs from Optical Variability for the Origins of Seeds (DAVOS): insights from the dark energy survey deep fields 
    Burke, Colin J.; Liu, Xin; Shen, Yue; Phadke, Kedar A.; Yang, Qian; Hartley, William G.; Harrison, Ian; Palmese, Antonella; Hengxiao, Guo; Zhang, Kaiwen; Kron, Richard; Turner, David J.; Giles, Paul A.; Lidman, Christopher; Chen, Yu-Ching; Gruendl, Robert A.; Choi, Ami; Amon, Alexandra; Sheldon, Erin; Aguena, M.; Allam, Sahar; Andrade-Oliveira, Felipe; Bacon, D.; Bertin, E.; Brooks, D.; Carnero Rosell, Aurelio; Carrasco Kind, Matias; Carretero, J.; Conselice, Christopher; Costanzi, M.; da Costa, Luiz N.; Pereira, Maria Elidaiana da Silva; Davis, Tamara M.; De Vicente, J.; Desai, S.; Diehl, Herman T.; Everett, S.; Ferrero, Ismael; Flaugher, B.; García-Bellido, J.; Gaztañaga, Enrique; Gruen, D.; Gschwend, J.; Gutierrez, G.; Hinton, Samuel R.; Hollowood, Devon L.; Honscheid, K.; Hoyle, B.; James, D. J.; Kuehn, K.; Maia, M. A. G.; Marshall, Jennifer L.; Menanteau, F.; Miquel, R.; Morgan, R.; Paz-Chinchón, Francisco; Pieres, A.; Plazas Malagón, Andrés A.; Reil, K.; Romer, A. K.; Sanchez, E.; Schubnell, M.; Serrano, S.; Sevilla-Noarbe, Ignacio; Smith, Mathew; Suchyta, E.; Tarle, G.; Thomas, D.; To, Chun-Hao; Varga, Tamas Norbert; Wilkinson, R. D. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We present a sample of 706, z < 1.5 active galactic nuclei (AGNs) selected from optical photometric variability in three of the Dark Energy Survey (DES) deep fields (E2, C3, and X3) over an area of 4.64 deg2. We construct ...
  • Optical variability of quasars with 20-yr photometric light curves 
    Stone, Zachary; Shen, Yue; Burke, Colin J; Chen, Yu-Ching; Yang, Qian; Liu, Xin; Gruendl, R.A.; Adamów, M.; Andrade-Oliveira, F.; Annis, J.; Bacon, D.; Bertin, E.; Bocquet, S.; Brooks, D.; Burke, D.L.; Carnero Rosell, Rosell; Carrasco Kind, Kind; Carretero, J.; Da Costa, L N; Pereira, M.E.S.; De Vicente, Vicente; Desai, S.; Diehl, H.T.; Doel, P.; Ferrero, Ismael; Friedel, D.N.; Frieman, J.; García-Bellido, J.; Gaztanaga, E.; Gruen, D.; Gutierrez, G.; Hinton, S.R.; Hollowood, D.L.; Honscheid, K.; James, D.J.; Kuehn, K.; Kuropatkin, N.; Lidman, C.; Maia, M.A.G.; Menanteau, F.; Miquel, R.; Morgan, R.; Paz-Chinchón, F.; Pieres, A.; Plazas Malagón, Malagon; Rodriguez-Monroy, M.; Sanchez, E.; Scarpine, V.; Serrano, S.; Sevilla-Noarbe, I.; Smith, M.; Suchyta, E.; Swanson, M.E.C.; Tarle, G.; To, C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    ABSTRACT We study the optical gri photometric variability of a sample of 190 quasars within the SDSS Stripe 82 region that have long-term photometric coverage during ∼1998−2020 with SDSS, PanSTARRS-1, the Dark ...