BASS. XXV. DR2 Broad-line-based Black Hole Mass Estimates and Biases from Obscuration

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dc.catalogadorpau
dc.contributor.authorMejía-Restrepo, Julian E.
dc.contributor.authorTrakhtenbrot, Benny
dc.contributor.authorKoss, Michael J.
dc.contributor.authorOh, Kyuseok
dc.contributor.authorden Brok, Jakob
dc.contributor.authorStern, Daniel
dc.contributor.authorPowell, Meredith C.
dc.contributor.authorRicci, Federica
dc.contributor.authorCaglar, Turgay
dc.contributor.authorRicci, Claudio
dc.contributor.authorBauer, Franz Erik
dc.contributor.authorTreister , Ezequiel
dc.contributor.authorHarrison, Fiona A.
dc.contributor.authorUrry, C. M.
dc.contributor.authorAnanna, Tonima Tasnim
dc.contributor.authorAsmus, Daniel
dc.contributor.authorAssef, Roberto J.
dc.contributor.authorBär, Rudolf E.
dc.contributor.authorBessiere, Patricia S.
dc.contributor.authorBurtscher, Leonard
dc.contributor.authorIchikawa, Kohei
dc.contributor.authorKakkad, Darshan
dc.contributor.authorKamraj, Nikita
dc.contributor.authorMushotzky, Richard
dc.contributor.authorPrivon, George C.
dc.contributor.authorRojas, Alejandra F.
dc.contributor.authorSani, Eleonora
dc.contributor.authorSchawinski, Kevin
dc.contributor.authorVeilleux, Sylvain
dc.date.accessioned2023-05-18T19:49:43Z
dc.date.available2023-05-18T19:49:43Z
dc.date.issued2022
dc.description.abstractWe present measurements of broad emission lines and virial estimates of supermassive black hole masses (M _{BH} ) for a large sample of ultrahard X-ray-selected active galactic nuclei (AGNs) as part of the second data release of the BAT AGN Spectroscopic Survey (BASS/DR2). Our catalog includes M _{BH} estimates for a total of 689 AGNs, determined from the Hα, Hβ, Mg II λ2798, and/or C_{IV} λ1549 broad emission lines. The core sample includes a total of 512 AGNs drawn from the 70 month Swift/BAT all-sky catalog. We also provide measurements for 177 additional AGNs that are drawn from deeper Swift/BAT survey data. We study the links between M _{BH} estimates and line-of-sight obscuration measured from X-ray spectral analysis. We find that broad Hα emission lines in obscured AGNs (Log(N_{H} / cm^{-2} > 22.0) are on average a factor of 8.0_{-2.4}^{+4.1} weaker relative to ultrahard X-ray emission and about 35_{-12}^{,+7} % narrower than those in unobscured sources (i.e.(Log(N_{H} / cm^{-2} > 21.5). This indicates that the innermost part of the broad-line region is preferentially absorbed. Consequently, current single-epoch M _{BH} prescriptions result in severely underestimated (>1 dex) masses for Type 1.9 sources (AGNs with broad Hα but no broad Hβ) and/or sources with Log(N_{H} / cm^{-2} >= 22.0 . We provide simple multiplicative corrections for the observed luminosity and width of the broad Hα component (LbHα and FWHMbHα) in such sources to account for this effect and to (partially) remedy M _{BH} estimates for Type 1.9 objects. As a key ingredient of BASS/DR2, our work provides the community with the data needed to further study powerful AGNs in the low-redshift universe.
dc.format.extent29 páginas
dc.fuente.origenORCID
dc.identifier.doi10.3847/1538-4365/ac6602
dc.identifier.issn0067-0049
dc.identifier.urihttps://doi.org/10.3847/1538-4365/ac6602
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/67097
dc.information.autorucInstituto de Astrofísica ; Bauer, Franz Erik ; 0000-0002-8686-8737 ; 1007961
dc.information.autorucInstituto de Astrofísica ; Treister , Ezequiel ; 0000-0001-7568-6412 ; 1031846
dc.issue.numero1
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final29
dc.pagina.inicio1
dc.revistaThe Astrophysical Journal Supplement Series
dc.rightsacceso abierto
dc.titleBASS. XXV. DR2 Broad-line-based Black Hole Mass Estimates and Biases from Obscuration
dc.typeartículo
dc.volumen261
sipa.codpersvinculados1007961
sipa.codpersvinculados1031846
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