Hubble Space Telescope Faint Object Spectrograph and ground-based observations of the broad absorption line quasar 0226-1024
| Autor: | K. T. Korista, E. M. Burbidge, Simon L. Morris, V. T. Junkkarinen, Ray J. Weymann, George F. Hartig, Craig B. Foltz, Michael Kopko, David A. Turnshek |
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| Rok vydání: | 1992 |
| Předmět: |
Physics
Absorption spectroscopy Faint Object Spectrograph Doubly ionized oxygen Astronomy Astronomy and Astrophysics Quasar Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Spectral line Physics::Geophysics Ion Space and Planetary Science Metastability Excited state Astrophysics::Galaxy Astrophysics |
| Zdroj: | The Astrophysical Journal. 401:529 |
| ISSN: | 1538-4357 0004-637X |
| Popis: | Faint Object Spectrograph data from the Hubble Space Telescope of the broad absorption line quasar 0226-1024 have revealed the presence of 8-10 absorbing ions between 680 and 1000 A (restframe): C III, N III, N IV, O III, O IV, O VI, S V, S VI, possibly Ne VIII, and possibly O V* arising from a metastable excited state. We also present ground-based optical observations of the broad line troughs for the following ions: H I, C IV, N V, Si IV, and possibly Fe III, S IV, P V, and C III* (also arising from a metastable excited state). The results of this fit are used to estimate the absorbing ionic column densities. There is evidence that the broad absorption line clouds are optically thick and either do not completely cover the continuum source or narrow unresolved lines are present. |
| Databáze: | OpenAIRE |
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