X-ray properties of the "Composite" Seyfert/Star-forming galaxies

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dc.creatorWolter, A.
dc.creatorTrinchieri, G.
dc.creatorDella Ceca, R.
dc.creatorPanessa, F.
dc.creatorDadina, M.
dc.creatorBassani, L.
dc.creatorCappi, M.
dc.creatorFruscione, A.
dc.creatorPellegrini, S.
dc.creatorPalumbo, G.
dc.date2004-07-28
dc.date.accessioned2026-07-07T02:14:08Z
dc.date.available2026-07-07T02:14:08Z
dc.descriptionAn enigmatic, small class of IR and X-ray luminous sources, named ``Composite'' starburst/Seyfert galaxies, has been defined from IRAS and RASS data. The objects have optical spectra dominated by the features of HII galaxies (plus, in some cases, weak Seyfert signatures) but X-ray luminosities higher than expected from starbursts and more typical of Seyfert nuclei. The true nature of this class of objects is still unknown. We present Chandra data of four of these galaxies that were obtained to investigate the nature of the X-ray source. The X-ray spectrum, the lack of any significant extended component, and the observed variability indicate that the AGN is the dominant component in the X-ray domain.
dc.description4 pages; 3 figure; proceedings of XLVIII Congresso della Societa' Astronomica Italiana, Milano, Italy 19-23 april 2004, to be published on MemSAIt; Eds. A. Wolter; G. Israel; F. Bacciotti
dc.identifierhttps://arxiv.org/abs/astro-ph/0407585
dc.identifierhttp://arxiv.org/abs/astro-ph/0407585
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8005
dc.subjectAstrophysics
dc.titleX-ray properties of the "Composite" Seyfert/Star-forming galaxies
dc.typetext

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