Spatial resolution bias in the mid-infrared Starburst/AGN classification

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dc.creatorLaurent, O.
dc.creatorMirabel, I. F.
dc.creatorCharmandaris, V.
dc.creatorGallais, P.
dc.creatorSauvage, M.
dc.creatorVigroux, L.
dc.creatorCesarsky, C.
dc.date2000-05-18
dc.date.accessioned2026-07-07T01:53:39Z
dc.date.available2026-07-07T01:53:39Z
dc.descriptionWe present the effects of limited spatial resolution to the observed mid-infrared (MIR) spectrum of an active galactic nucleus (AGN) surrounded by a disk with massive star forming regions. Using MIR observations of the face-on nearby Seyfert 1 galaxy NGC 6814, we vary the observing aperture and examine the evolution of the observed AGN/starburst fraction with our MIR diagnostic. We show that the spatial resolution of ISOCAM is sufficient to disentangle AGN from starburst features in nuclear regions of nearby galaxies (D<50Mpc). However, with the exception of a few ultra-luminous galaxies, dilution effects hide completely the AGN contribution in more distant galaxies.
dc.description4 pages, 3 figures. To appear in the Proceedings of the XIXth Rencontres de Moriond, `Building the Galaxies: from the Primordial Universe to the Present', p. 79, 1999 eds F. Hammer, T.X.T. Thuan, V. Cayatte, B. Guiderdoni and J. Tran Than Van
dc.identifierhttps://arxiv.org/abs/astro-ph/0005377
dc.identifierhttp://arxiv.org/abs/astro-ph/0005377
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/1037
dc.subjectAstrophysics
dc.titleSpatial resolution bias in the mid-infrared Starburst/AGN classification
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