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- W2022367171 abstract "On the basis of detailed calculations of O III line intensities under optically thin and optically thick conditions, an analysis is proposed for spatially resolved observations of the Bowen lines which could yield the local photoexcitation rate and an estimate of the local optical depth, more specifically the local mean escape probability associated with the line of sight. The importance of such newly defined escape probabilities is emphasized. An illustrative application is made to the data of Barker for the planetary nebula NGC 6720. The far-infrared line ratio I (88 microns)/I(52 microns) is also sensitive to Bowen pumping at low optical depths, and interpretation of the ratio may need to take this effect into account in some H II regions. It is noted that the S III far-infrared line ratio could provide an independent check on whether the effect is present." @default.
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- W2022367171 date "1988-08-01" @default.
- W2022367171 modified "2023-09-27" @default.
- W2022367171 title "Spatial probing of nebular properties via Bowen pumping" @default.
- W2022367171 doi "https://doi.org/10.1086/166602" @default.
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