Partial Coverage and Time Variability of Narrow-Line Intrinsic QSO Absorption Systems

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dc.creatorBarlow, Thomas A.
dc.creatorHamann, F.
dc.creatorSargent, W. L. W.
dc.date1997-05-07
dc.date.accessioned2026-07-07T02:23:20Z
dc.date.available2026-07-07T02:23:20Z
dc.descriptionIt is possible to distinguish ``intrinsic'' absorption systems (gas clouds within the quasar environment) from ``intervening'' systems (gas clouds unrelated to the quasar phenomenon) by considering certain observational properties. We find that the most direct determinations of the intrinsic nature of a system are time variability and partial coverage of the background light source by the absorption region. Both of these conditions are unlikely to occur in intervening systems. We present Keck and HIRES data which demonstrate both these phenomena. We also summarize a list of several other observational properties which appear to be indicative of ``intrinsic'' systems.
dc.description6 pages with 4 figures, LaTex, to appear in "Mass Ejection From AGN," eds. R.Weymann, I.Shlosman, N.Arav
dc.identifierhttps://arxiv.org/abs/astro-ph/9705048
dc.identifierhttp://arxiv.org/abs/astro-ph/9705048
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11211
dc.subjectAstrophysics
dc.titlePartial Coverage and Time Variability of Narrow-Line Intrinsic QSO Absorption Systems
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