dc.creatorMejía Restrepo, Julián
dc.creatorTrakhtenbrot, B.
dc.creatorLira Teillery, Paulina
dc.creatorNetzer, H.
dc.date.accessioned2019-05-31T15:19:59Z
dc.date.available2019-05-31T15:19:59Z
dc.date.created2019-05-31T15:19:59Z
dc.date.issued2018
dc.identifierMonthly Notices of the Royal Astronomical Society, Volumen 478, Issue 2, 2018, Pages 1929-1941
dc.identifier13652966
dc.identifier00358711
dc.identifier10.1093/mnras/sty1086
dc.identifierhttps://repositorio.uchile.cl/handle/2250/169416
dc.description.abstractIn large optical surveys at high redshifts (z > 2), the C IV λ1549 broad emission line is the most practical alternative to estimate the mass (MBH) of active supermassive black holes. However, mass determinations obtained with this line are known to be highly uncertain. In this work, we use the Sloan Digital Sky Survey Data Release 7 and 12 quasar catalogues to statistically test three alternative methods put forward in the literature to improve CIV-based MBH estimations. These methods are constructed from correlations between the ratio of the C IVλ1549 linewidth to the low-ionization linewidths (H α, H β, and MgIIλ2798) and several other properties of rest-frame ultraviolet emission lines. Our analysis suggests that these correction methods are of limited applicability, mostly because all of them depend on correlations that are driven by the linewidth of the CIV profile itself and not by an interconnection between the linewidth of the C IV line and the linewidth of the low ionization lines. Our results show that optical CIV-based mass estimates at high redshift cannot be a proper replacement for estimates based on infrared spectroscopy of low ionization lines like H α, H β, and MgII.
dc.languageen
dc.publisherOxford University Press
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjectGalaxies: nuclei
dc.subjectQuasars: emission lines
dc.subjectQuasars: general
dc.subjectQuasars: super massive black holes
dc.titleCan we improve CIV-based single-epoch black hole mass estimations?
dc.typeArtículo de revista


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