Investigating the Effect of Galaxy Interactions on the Enhancement of Active Galactic Nuclei at 0.5 < z < 3.0

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dc.contributor.authorShah, Ekta A.
dc.contributor.authorKartaltepe, Jeyhan S.
dc.contributor.authorMagagnoli, Christina T.
dc.contributor.authorCox, Isabella G.
dc.contributor.authorWetherell, Caleb T.
dc.contributor.authorVanderhoof, Brittany N.
dc.contributor.authorCalabro, Antonello
dc.contributor.authorChartab, Nima
dc.contributor.authorConselice, Christopher J.
dc.contributor.authorCroton, Darren J.
dc.contributor.authorDonley, Jennifer
dc.contributor.authorde Groot, Laura
dc.contributor.authorde la Vega, Alexander
dc.contributor.authorHathi, Nimish P.
dc.contributor.authorIlbert, Olivier
dc.contributor.authorInami, Hanae
dc.contributor.authorKocevski, Dale D.
dc.contributor.authorKoekemoer, Anton M.
dc.contributor.authorLemaux, Brian C.
dc.contributor.authorMantha, Kameswara Bharadwaj
dc.contributor.authorMarchesi, Stefano
dc.contributor.authorMartig, Marie
dc.contributor.authorMasters, Daniel C.
dc.contributor.authorMcGrath, Elizabeth J.
dc.contributor.authorMcIntosh, Daniel H.
dc.contributor.authorMoreno, Jorge
dc.contributor.authorNayyeri, Hooshang
dc.contributor.authorPampliega, Belen Alcalde
dc.contributor.authorSalvato, Mara
dc.contributor.authorSnyder, Gregory F.
dc.contributor.authorStraughn, Amber N.
dc.contributor.authorTreister, Ezequiel
dc.contributor.authorWeston, Madalyn E.
dc.date.accessioned2023-05-19T20:50:02Z
dc.date.available2023-05-19T20:50:02Z
dc.date.issued2020
dc.description.abstractGalaxy interactions and mergers are thought to play an important role in the evolution of galaxies. Studies in the nearby universe show a higher fraction of active galactic nuclei (AGNs) in interacting and merging galaxies than in their isolated counterparts, indicating that such interactions are important contributors to black hole growth. To investigate the evolution of this role at higher redshifts, we have compiled the largest known sample of major spectroscopic galaxy pairs (2381 with Delta V < 5000 km s(-1)) at 0.5 < z < 3.0 from observations in the COSMOS and CANDELS surveys. We identify X-ray and IR AGNs among this kinematic pair sample, a visually identified sample of mergers and interactions, and a mass-, redshift-, and environment-matched control sample for each in order to calculate AGN fractions and the level of AGN enhancement as a function of relative velocity, redshift, and X-ray luminosity. While we see a slight increase in AGN fraction with decreasing projected separation, overall, we find no significant enhancement relative to the control sample at any separation. In the closest projected separation bin (< 25 kpc, Delta V < 1000 km s(-1)), we find enhancements of a factor of 0.94(-0.16)(+0.21) and 1.00(-0.31)(+0.58) for X-ray and IR-selected AGNs, respectively. While we conclude that galaxy interactions do not significantly enhance AGN activity on average over 0.5 < z < 3.0 at these separations, given the errors and the small sample size at the closest projected separations, our results would be consistent with the presence of low-level AGN enhancement.
dc.fechaingreso.objetodigital2025-03-14
dc.fuente.origenORCID-mayo23
dc.identifier.doi10.3847/1538-4357/abbf59
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/70133
dc.identifier.wosidWOS:000592337800001
dc.language.isoen
dc.nota.accesocontenido parcial
dc.rightsacceso restringido
dc.titleInvestigating the Effect of Galaxy Interactions on the Enhancement of Active Galactic Nuclei at 0.5 &lt; z &lt; 3.0es_ES
dc.typeartículo
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