X-ray properties of dust-obscured galaxies with broad optical/UV emission lines

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dc.contributor.authorZou, Fan
dc.contributor.authorBrandt, William N.
dc.contributor.authorVito, Fabio
dc.contributor.authorChen, Chien-Ting
dc.contributor.authorGarmire, Gordon P.
dc.contributor.authorStern, Daniel
dc.contributor.authorAyubinia, Ashraf
dc.date.accessioned2025-01-23T19:47:15Z
dc.date.available2025-01-23T19:47:15Z
dc.date.issued2020
dc.description.abstractDust-obscured galaxies (DOGs) with extreme infrared luminosities may represent a key phase in the co-evolution of galaxies and supermassive black holes. We select 12 DOGs at 0.3 less than or similar to z less than or similar to 1.0 with broad Mg II or H beta emission lines and investigate their X-ray properties utilizing snapshot observations (similar to 3 ks per source) with Chandra. By assuming that the broad lines are broadened due to virial motions of broad-line regions, we find that our sources generally have high Eddington ratios (lambda(Edd)). Our sources generally have moderate intrinsic X-ray luminosities (L-X less than or similar to 10(45) erg s(-1)), which are similar to those of other DOGs, but are more obscured. They also present moderate outflows and intense starbursts. Based on these findings, we conclude that high-lambda(Edd) DOGs are closer to the peaks of both host-galaxy and black hole growth compared to other DOGs, and that (active galactic nucleus) AGN feedback has not swept away their reservoirs of gas. However, we cannot fully rule out the possibility that the broad lines are broadened by outflows, at least for some sources. We investigate the relations among L-X, AGN rest-frame 6 mu m monochromatic luminosity, and AGN bolometric luminosity, and find the relations are consistent with the expected ones.
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/staa2930
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/staa2930
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100364
dc.identifier.wosidWOS:000587762900020
dc.issue.numero2
dc.language.isoen
dc.pagina.final1840
dc.pagina.inicio1823
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectgalaxies: active
dc.subjectgalaxies: evolution
dc.subjectgalaxies: nuclei
dc.subjectX-rays: galaxies
dc.titleX-ray properties of dust-obscured galaxies with broad optical/UV emission lines
dc.typeartículo
dc.volumen499
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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