A tale of three galaxies: A "CLUMPY" view of the spectroscopically anomalous galaxies IRAS F10398+1455, IRAS F21013-0739 and SDSS J0808+3948

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dc.contributor.authorXie, Yanxia
dc.contributor.authorNikutta, Robert
dc.contributor.authorHao, Lei
dc.contributor.authorLi, Aigen
dc.date.accessioned2025-01-23T21:27:34Z
dc.date.available2025-01-23T21:27:34Z
dc.date.issued2016
dc.description.abstractWe investigate the dust properties in three spectroscopically anomalous galaxies (IRAS F10398+1455, IRAS F21013-0739 and SDSS J0808+3948). Their Spitzer/IRS spectra are characterized by a steep similar to 5-8 gm emission continuum, strong emission bands from polycyclic aromatic hydrocarbon (PAH) molecules, and prominent 10 mu m silicate emission. The steep similar to 5-8 mu m continuum and strong PAH emission features suggest the presence of starbursts, while the silicate emission is indicative of significant heating from AGNs. The simultaneous detection of these two observational properties has rarely been reported on galactic scale. We employ the PAHETT software to estimate their starlight contributions, and the CLUMPY model for the components contributed by the AGN tori. We find that the CLUMPY model is generally successful in explaining the overall dust infrared emission, although it appears to emit too flat at the similar to 5-8 mu m continuum to be consistent with that observed in IRAS F10398+1455 and IRAS F210130739. The flat similar to 5-8 mu m continuum calculated from the CLUMPY model could arise from the adopted specific silicate opacity of Ossenkopf et al. (1992) which exceeds that of the Draine and Lee (1984) "astronomical silicate" by a factor up to 2 in the similar to 5-8 mu m wavelength range. Future models with a variety of dust species incorporated in the CLUMPY radiation transfer regime are needed for a thorough understanding of the dust properties of these spectroscopically anomalous galaxies. (C) 2016 Elsevier Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.pss.2016.05.009
dc.identifier.issn0032-0633
dc.identifier.urihttps://doi.org/10.1016/j.pss.2016.05.009
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101385
dc.identifier.wosidWOS:000389284800005
dc.language.isoen
dc.pagina.final30
dc.pagina.inicio23
dc.revistaPlanetary and space science
dc.rightsacceso restringido
dc.subjectInfrared
dc.subjectExtinction
dc.subjectDust
dc.subjectModel
dc.titleA tale of three galaxies: A "CLUMPY" view of the spectroscopically anomalous galaxies IRAS F10398+1455, IRAS F21013-0739 and SDSS J0808+3948
dc.typeartículo
dc.volumen133
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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