To calculate the Balmer, Paschen, and Brackett line intensities, we solved the statistical equilibrium equations for a twenty level plus continuum atom of hydrogen. From the temperature, ionization, and the first three level populations of the prominence models deduced in a previous work we have ca
The middle Balmer decrement in quiescent prominences
โ Scribed by Donald A. Landman; Michael Mongillo
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 302 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0038-0938
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โฆ Synopsis
We present measurements of the middle Balmer decrement (n = 10-22) in a number of quiescent prominences. The average decrement continues smoothly the trend of the decrement determined in our previous work on the earlier Balmer lines. The range of Tex is found to be 3450-11 000 K, consistent with the generally accepted range of values for Te. In addition, some values for the hydrogen-tometal (Fe, Ti ยง integrated line intensities are given.
๐ SIMILAR VOLUMES
On the basis of Kippenhahn and Schltiter's magnetohydrostatic model of a quiescent prominence we have attempted to study the effect of a rotational velocity field in it. We find that a physically plausible solution is not possible in the vertical plane. A possibility, however, is shown in the horizo
We have measured the longitudinal component, Bll, of the magnetic field in quiescent prominences and obtained a relationship between BII and 0, where 0 is the angle between the long axis of the prominence and the north-s0uth direction on the sun. From this relationship we deduce a distribution funct