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- W2027687860 abstract "Results of near-simultaneous IUE and Voyager ultraviolet spectrometer (UVS) observations of 3C 273, obtained during the period of 1985 late July-early August are reported. The UVS data show a significant drop in flux for observed wavelengths below 1060 A. This may be due to Lyman continuum absorption in the rest frame of 3C 273. If so, then the lack of associated Lyman-alpha absorption severely constrains the properties of the absorbing medium. The most plausible explanation may therefore be that the edge is due to absorption in an accretion disk within the nucleus of 3C 273. Alternatively, models in which the drop in flux is due to a turnover in the underlying continuum cannot be excluded; this interpretation raises serious questions concerning the total energy budget in the broad-line regions. In either case, there can be no reddening of the source of continuum emission other than that due to the Galaxy." @default.
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- W2027687860 date "1988-02-01" @default.
- W2027687860 modified "2023-09-26" @default.
- W2027687860 title "Voyager and IUE observations of 3C 273 - Detection of possible Lyman continuum absorption in a nearby (z = 0.158) quasar" @default.
- W2027687860 doi "https://doi.org/10.1086/166037" @default.
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