Different Velocity Dependences of Physical Conditions of High- and Low-Ionization Lines in Broad-Line Regions

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dc.creatorSnedden, Stephanie A.
dc.creatorGaskell, C. Martin
dc.date2004-03-08
dc.date.accessioned2026-07-07T02:12:33Z
dc.date.available2026-07-07T02:12:33Z
dc.descriptionWe present results from a study of high- and low-ionization emission line ratios as a function of projected velocity for a sample of eight active galactic nuclei (AGNs). Our results are based on analysis of high signal-to-noise optical and Hubble Space Telescope (HST) UV spectra. Comparing the emission line ratios to those predicted by photoionization models indicates that the physical conditions responsible for the high-ionization emission lines are consistent with a wind, whereas those of the low-ionization lines are consistent with a virialized disk.
dc.description5 pages, 2 figures in AASTeX. To appear in "AGN Physics with the Sloan Digital Sky Survey", ASP Conference Series Vol. 311, 2004, G. T. Richards and P. B. Hall, eds
dc.identifierhttps://arxiv.org/abs/astro-ph/0403174
dc.identifierhttp://arxiv.org/abs/astro-ph/0403174
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7488
dc.subjectAstrophysics
dc.titleDifferent Velocity Dependences of Physical Conditions of High- and Low-Ionization Lines in Broad-Line Regions
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