BASS. XLIX. Characterization of Highly Luminous and Obscured AGNs: Local X-Ray and [Ne V]λ3426 Emission in Comparison with the High-redshift Universe

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dc.catalogadorpva
dc.contributor.authorPeca, Alessandro
dc.contributor.authorKoss, Michael J.
dc.contributor.authorOh, Kyuseok
dc.contributor.authorRicci, Claudio
dc.contributor.authorTrakhtenbrot, Benny
dc.contributor.authorMushotzky, Richard
dc.contributor.authorTreister, Ezequiel
dc.contributor.authorUrry, C. Megan
dc.contributor.authorPizzetti, Andrealuna
dc.contributor.authorIchikawa, Kohei
dc.contributor.authorTortosa, Alessia
dc.contributor.authorRicci, Federica
dc.contributor.authorSignorini, Matilde
dc.contributor.authorKakkad, Darshan
dc.contributor.authorChang, Chin-Shin
dc.contributor.authorMazzolari, Giovanni
dc.contributor.authorCaglar, Turgay
dc.contributor.authorMagno, Macon
dc.contributor.authorMoral Castro, Ignacio del
dc.contributor.authorBoorman, Peter G.
dc.contributor.authorAnanna, Tonima T.
dc.contributor.authorHarrison, Fiona
dc.contributor.authorStern, Daniel
dc.contributor.authorSanders, David
dc.date.accessioned2025-08-26T21:47:13Z
dc.date.available2025-08-26T21:47:13Z
dc.date.issued2025
dc.description.abstractWe present a detailed analysis of the most luminous and obscured active galactic nuclei (AGNs) detected in the ultra-hard X-ray band (14–195 kev) by the Swift/Burst Alert Telescope. Our sample comprises 21 X-ray luminous (log LX/erg s > 44.6 1 , 2–10 keV) AGNs at z < 0.6, optically classified as Seyfert 1.9 and 2. Using NuSTAR, XMM-Newton, Suzaku, and Chandra data, we constrain AGN properties such as absorption column density NH, photon index Γ, intrinsic LX, covering factor, and iron Kα equivalent width. We find median line-ofsight / = + logNH cm 23.5 2 1.2 0.5 and 2–10 keV rest-frame, de-absorbed / = + log LX erg s 44.7 1 0.6 0.8, at the 5th and 95th percentiles. For sources with black hole mass estimates (12/20), we find a weak correlation between Γ and Eddington ratio (λEdd). Of these, six (50% ± 13%) lie in the NH-λEdd “forbidden region” and exhibit a combined higher prevalence of NH variability and outflow signatures, suggesting a transitional phase where AGN feedback may be clearing the obscuring material. For the 13/21 sources with multi-epoch X-ray spectroscopy, + 85 1 5 5% exhibit variability in either 2–10 keV flux (+ 77 1 8 5%) or line-of-sight NH (+ 33 1 1 0 5% ). For the 20/21 sources with available near-UV/optical spectroscopy, we detect [Ne v]λ3426 in 17 (+ 85 11 5 %), confirming its reliability to probe AGN emission even in heavily obscured systems. When renormalized to the same [O III]λ5007 peak flux as z = 2 −9 narrow-line AGNs identified with JWST, our sample exhibits significantly stronger [Ne v]λ3426 emission, suggesting that high-redshift obscured AGNs may be intrinsically weaker in [Ne v]λ3426 or that [Ne v]λ3426 is more challenging to detect in those environments. The sources presented in this work serve as a benchmark for high-redshift analogs, showing the potential of [Ne v]λ3426 to reveal obscured AGNs and the need for future missions to expand X-ray studies into the high-redshift Universe.
dc.fechaingreso.objetodigital2025-08-26
dc.format.extent33 páginas
dc.fuente.origenORCID
dc.identifier.doi10.3847/1538-4357/adec9a
dc.identifier.urihttps://doi.org/10.3847/1538-4357/adec9a
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/105298
dc.information.autorucInstituto de Astrofísica; Treister, Ezequiel; 0000-0001-7568-6412; 1031846
dc.information.autorucInstituto de Astrofísica; Moral Castro, Ignacio del; S/I; 1338260
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaThe Astrophysical Journal
dc.rightsacceso abierto
dc.rights.licenseAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectActive galactic nuclei
dc.subjectX-ray active galactic nuclei
dc.subjectX-ray astronomy
dc.subjectActive galaxies
dc.subjectHigh-luminosity active galactic nuclei
dc.subjectGalaxy evolution
dc.subjectHigh energy astrophysics
dc.subjectHigh-redshift galaxies
dc.subjectJames Webb Space Telescope
dc.subjectSeyfert galaxies
dc.subject.ddc520
dc.subject.deweyAstronomíaes_ES
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titleBASS. XLIX. Characterization of Highly Luminous and Obscured AGNs: Local X-Ray and [Ne V]λ3426 Emission in Comparison with the High-redshift Universe
dc.typeartículo
dc.volumen990
sipa.codpersvinculados1031846
sipa.codpersvinculados1338260
sipa.trazabilidadORCID;2025-08-22
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