The emission-line spectrum of KUG 1031+398 and the Intermediate Line Region controversy

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dc.creatorGoncalves, A. C.
dc.creatorVeron, P.
dc.creatorVeron-Cetty, M. -P.
dc.date1998-07-31
dc.date.accessioned2026-07-07T02:27:30Z
dc.date.available2026-07-07T02:27:30Z
dc.descriptionWe present results based on the analysis of optical spectra of the Narrow-Line Seyfert 1 (NLS1) galaxy KUG 1031+398, for which evidence was reported of a line-emitting region "intermediate" (both in terms of velocity and density) between the conventional Broad and Narrow Line Regions (BLR and NLR, respectively). From our observations and modeling of the spectra, we get a consistent decomposition of the line profiles into four components: an extended H II region with unresolved lines, two distinct Seyfert-type clouds identified with the NLR, and a relatively narrow "broad line" component emitting only Balmer lines but no forbidden lines. Therefore, although we find this object to be exceptional in having line-emission from the BLR with almost the same width as the narrow lines, our interpretation of the data does not support the existence of an "intermediate" line region (ILR).
dc.description6 pages (LaTeX2e) including 1 figure; needs paspconf.sty. To be published in the proceedings of the "Structure and Kinematics of Quasar Broad Line Regions" conference (eds. C. M. Gaskell, W. N. Brandt, M. Dietrich, D. Dultzin-Hacyan and M. Eracleous) held the 23-26 March 1998, Lincoln, Nebraska. Also available at http://www.obs-hp.fr/www/preprints/pp123/pp123.html
dc.identifierhttps://arxiv.org/abs/astro-ph/9807332
dc.identifierhttp://arxiv.org/abs/astro-ph/9807332
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/12721
dc.subjectAstrophysics
dc.titleThe emission-line spectrum of KUG 1031+398 and the Intermediate Line Region controversy
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