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A relation between the mid-infrared [Ne v] 14.3 µm And [Ne III] 15.6 Μm lines in active galactic nuclei

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dc.contributor.author Gorjian, V.
dc.contributor.author Cleary, K.
dc.contributor.author Werner, M. W.
dc.contributor.author Lawrence, C. R.
dc.date.accessioned 2007-08-16T22:45:57Z
dc.date.available 2007-08-16T22:45:57Z
dc.date.issued 2007-01-18
dc.identifier.citation The Astrophysical Journal Letters, 655: L73–L76, 2007 February 1 en
dc.identifier.clearanceno 06-3927
dc.identifier.uri http://hdl.handle.net/2014/40385
dc.description.abstract We present a strong correlation between the [Ne v] 14.3 mm and [Ne III] 15.6 mm emission lines arising from the narrow-line regions (NLRs) of active galactic nuclei (AGNs), spanning 4 orders of magnitude in luminosity. The data are compiled primarily from Spitzer Space Telescope observations of nearby Seyfert galaxies (median z p 0.01) and 3C radio sources (median z p 0.52). This correlation is consistent with earlier studies in the optical/UV bands showing that line ratios arising in the NLRs are remarkably constant across AGNs. We also show that the correlation allows only a very narrow range in ionization parameter for simple photoionization models. The observed correlation will place tight constraints on alternative models, which predict constant line ratios over a broader range in ionization parameter. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 86914 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher American Astronomical Society en
dc.subject active galaxies en
dc.subject Seyfert galaxies en
dc.subject formation en
dc.subject quasars en
dc.subject emission lines en
dc.title A relation between the mid-infrared [Ne v] 14.3 µm And [Ne III] 15.6 Μm lines in active galactic nuclei en
dc.type Article en


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