Emission curve of growth for Feii in chromospheric limb spectra |
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| Authors: | Y Hanaoka I Tsuda K Sadakane M Kanno |
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| Institution: | (1) Kwasan and Hida Observatories, University of Kyoto, Kamitakara, 506-13 Gifu, Japan;(2) Astronomical Institute, Osaka Kyoiku University, 543 Osaka, Japan;(3) Present address: Kun-ei High School, 564 Osaka, Japan |
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| Abstract: | The 270 chromospheric emission lines of Feii ranging between 2000 and 3200 Å observed by Skylab at a height of 4 (2900 km) above the limb of the quiet Sun are analyzed by the emission curve of growth method, using newly calculated gf-values. It is derived that the excitation temperature is 7.2 × 103 K and that the turbulent velocity is consistent with the previous results that the microturbulent velocity is lower than 10 km s–1 in the cool (<104 K) region of the chromosphere.Contributions from the Kwasan and Hida Observatories, University of Kyoto, No. 270. |
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