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- W1980712053 abstract "Five plates showing the chromospheric D 3 and H α lines as sets of interference fringes are analysed by Treanor's method (16). This reduction, for the lowest 3000 km in the chromosphere, gives a D 3 profile which shows no systematic change with height (intensities normalized) and an H α profile whose broadening decreases from 1.15 A at 200 km to 0.795 A at 3200 km. It is supposed therefore that the H α line is broadened in part by self-absorption, and a method of eliminating this is described. Assuming that the significant contributions to the H α and D 3 emissions come from the same regions in the chromosphere, it is deduced from a comparison of the resultant helium and hydrogen Doppler profiles that the turbulent velocity is about 16 km/sec and that, though the temperature cannot be accurately determined, it is probably higher than that of the photosphere." @default.
- W1980712053 created "2016-06-24" @default.
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- W1980712053 date "1958-02-01" @default.
- W1980712053 modified "2023-09-25" @default.
- W1980712053 title "The Profiles of Chromospheric H and D3 from Interferometric Observations" @default.
- W1980712053 doi "https://doi.org/10.1093/mnras/118.1.18" @default.
- W1980712053 hasPublicationYear "1958" @default.
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