BASS. LIV. Physical Properties of AGN-hosting Galaxy Mergers from Multiwavelength SED Fitting

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dc.catalogadorjlo
dc.contributor.authorTroncoso Balbiano, Marco Javier
dc.contributor.authorTreister, Ezequiel
dc.contributor.authorRojas, Alejandra
dc.contributor.authorBoquien, Médéric
dc.contributor.authorBauer, Franz
dc.contributor.authorKoss, Michael J.
dc.contributor.authorAssef, Roberto J.
dc.contributor.authorParra Tello, Miguel Agustín
dc.contributor.authorMoral-Castro, Ignacio del
dc.contributor.authorRicci, Claudio
dc.contributor.authorDai, Sophia
dc.contributor.authorOh, Kyuseok
dc.contributor.authorRicci, Federica
dc.contributor.authorPeca, Alessandro
dc.contributor.authorUrry, C. Megan
dc.contributor.authorGupta, Kriti Kamal
dc.contributor.authorVenturi, Giacomo
dc.contributor.authorSignorini, Matilde
dc.contributor.authorMushotzky, Richard
dc.contributor.authorSanders, David
dc.date.accessioned2025-12-04T17:30:45Z
dc.date.available2025-12-04T17:30:45Z
dc.date.issued2025
dc.description.abstractGalaxy mergers are believed to play an important role in triggering rapid supermassive black hole (SMBH) growth. As merging nuclei approach each other, the physical properties of the participating galaxies and the associated SMBH growth are expected to evolve significantly. This study measures and characterizes these physical properties throughout the merger sequence. We constructed multiwavelength Spectral Energy Distributions (SEDs) from hard X-rays to the far-infrared (FIR) for a sample of 72 nearby Active Galactic Nuclei (AGN) host galaxies. The sample comprises 64 interacting systems, including single AGNs in mergers and dual AGNs, with nuclear separations 30 kpc, as well as eight isolated active galaxies with merging features. We carefully adapted available photometric measurements at each wavelength to account for their complex morphologies and varying spatial resolutions, to perform SED fitting using CIGALE, aimed to derive critical physical properties. Our results reveal that merging galaxies hosting AGN(s) show deviations from the star-forming main sequence, and a wide range of star formation rates (SFRs). Both AGN activity and star formation are significantly influenced by the merger process, but these effects are more prominent in major, mass ratios 4:1, interactions. We find that the projected nuclear separation is not a good tracer of the merger stage. Instead, morphological classification accurately assesses the merger progression. Based on this morphological analysis, late-stage mergers exhibit elevated SFRs (5.1), AGN luminosities (2.4), and nuclear obscuration (2.8) compared to earlier stages, supporting previous findings and reinforcing the link between merger-driven galaxy evolution and SMBH growth.
dc.fechaingreso.objetodigital2025-12-04
dc.format.extent24 páginas
dc.fuente.origenORCID
dc.identifier.doi10.3847/1538-4357/ae0a4b
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ae0a4b
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/107277
dc.information.autorucInstituto de Astrofísica; Treister , Ezequiel; 0000-0001-7568-6412; 1031846
dc.information.autorucInstituto de Astrofísica; Troncoso Balbiano, Marco Javier; 0009-0002-2740-2993; 1064511
dc.information.autorucInstituto de Astrofísica; Parra Tello, Miguel Agustín; S/I; 1044953
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaarXiv
dc.rightsacceso abierto
dc.subjectGalaxy mergers
dc.subjectSpectral energy distribution
dc.subjectAGN host galaxies
dc.subject.ddc520
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titleBASS. LIV. Physical Properties of AGN-hosting Galaxy Mergers from Multiwavelength SED Fitting
dc.typeartículo
sipa.codpersvinculados1031846
sipa.codpersvinculados1064511
sipa.codpersvinculados1044953
sipa.trazabilidadORCID;2025-12-01
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