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The Sloan Digital Sky Survey Reverberation Mapping Project : investigation of continuum lag dependence on broad-line contamination and quasar properties
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dc.contributor.author | Sharp, Hugh W. | |
dc.contributor.author | Homayouni, Y. | |
dc.contributor.author | Trump, Jonathan R. | |
dc.contributor.author | Anderson, Scott F. | |
dc.contributor.author | Assef, Roberto J. | |
dc.contributor.author | Brandt, W. N. | |
dc.contributor.author | Davis, Megan C. | |
dc.contributor.author | Fries, Logan B. | |
dc.contributor.author | Grier, Catherine J. | |
dc.contributor.author | Hall, Patrick B. | |
dc.contributor.author | Horne, Keith | |
dc.contributor.author | Koekemoer, Anton M. | |
dc.contributor.author | Martínez-Aldama, Mary Loli | |
dc.contributor.author | Menezes, David M. | |
dc.contributor.author | Pena, Theodore | |
dc.contributor.author | Ricci, C. | |
dc.contributor.author | Schneider, Donald P. | |
dc.contributor.author | Shen, Yue | |
dc.contributor.author | Trakhtenbrot, Benny | |
dc.date.accessioned | 2024-01-30T10:30:05Z | |
dc.date.available | 2024-01-30T10:30:05Z | |
dc.date.issued | 2024-01-20 | |
dc.identifier | 298605990 | |
dc.identifier | f502f485-a5a3-43c1-b264-67fb239fd557 | |
dc.identifier | 85183635032 | |
dc.identifier.citation | Sharp , H W , Homayouni , Y , Trump , J R , Anderson , S F , Assef , R J , Brandt , W N , Davis , M C , Fries , L B , Grier , C J , Hall , P B , Horne , K , Koekemoer , A M , Martínez-Aldama , M L , Menezes , D M , Pena , T , Ricci , C , Schneider , D P , Shen , Y & Trakhtenbrot , B 2024 , ' The Sloan Digital Sky Survey Reverberation Mapping Project : investigation of continuum lag dependence on broad-line contamination and quasar properties ' , Astrophysical Journal , vol. 961 , no. 1 , 93 . https://doi.org/10.3847/1538-4357/ad0cea | en |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | Jisc: 1683609 | |
dc.identifier.other | publisher-id: apjad0cea | |
dc.identifier.other | manuscript: ad0cea | |
dc.identifier.other | other: aas49230 | |
dc.identifier.uri | https://hdl.handle.net/10023/29103 | |
dc.description | Funding: H.W.S., J.R.T., M.C.D., and L.B.F. acknowledge support from NSF grant CAREER-1945546, and with C.J.G. acknowledge support from NSF grants AST-2009539 and AST-2108668. C.R. acknowledges support from Fondecyt Regular grant 1230345 and ANID BASAL project FB210003. M.L.M.-A. acknowledges financial support from Millenium Nucleus NCN19-058 (TITANs). | en |
dc.description.abstract | This work studies the relationship between accretion-disk size and quasar properties, using a sample of 95 quasars from the Sloan Digital Sky Survey Reverberation Mapping Project with measured lags between the g and i photometric bands. Our sample includes disk lags that are both longer and shorter than predicted by the Shakura and Sunyaev model, requiring explanations that satisfy both cases. Although our quasars each have one lag measurement, we explore the wavelength-dependent effects of diffuse broad-line region (BLR) contamination through our sample’s broad redshift range, 0.1 < z < 1.2. We do not find significant evidence of variable diffuse Fe ii and Balmer nebular emission in the rms spectra, nor from Anderson–Darling tests of quasars in redshift ranges with and without diffuse nebular emission falling in the observed-frame filters. Contrary to previous work, we do not detect a significant correlation between the measured continuum and BLR lags in our luminous quasar sample, similarly suggesting that our continuum lags are not dominated by diffuse nebular emission. Similar to other studies, we find that quasars with larger-than-expected continuum lags have lower 3000 Å luminosities, and we additionally find longer continuum lags with lower X-ray luminosities and black hole masses. Our lack of evidence for diffuse BLR contribution to the lags indicates that the anticorrelation between continuum lag and luminosity is not likely to be due to the Baldwin effect. Instead, these anticorrelations favor models in which the continuum lag increases in lower-luminosity active galactic nuclei, including scenarios featuring magnetic coupling between the accretion disk and X-ray corona, and/or ripples or rims in the disk. | |
dc.format.extent | 11 | |
dc.format.extent | 1478656 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysical Journal | en |
dc.subject | Quasars | en |
dc.subject | Supermassive black holes | en |
dc.subject | Active galactic nuclei | en |
dc.subject | QB Astronomy | en |
dc.subject | 3rd-DAS | en |
dc.subject.lcc | QB | en |
dc.title | The Sloan Digital Sky Survey Reverberation Mapping Project : investigation of continuum lag dependence on broad-line contamination and quasar properties | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.identifier.doi | 10.3847/1538-4357/ad0cea | |
dc.description.status | Peer reviewed | en |
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