Molecular line haze opacity in sunspots
β Scribed by V. P. Gaur; M. C. Pande; M. Sah
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 221 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0038-0938
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β¦ Synopsis
It has been shown that bound-bound opacity due to electronic transitions of molecules CN, Call, MgH, and TiO explains, in a first approximation, the line haze opacity postulated by Zwaan (1974) for the region 0.5 ~m to 0.9 ixm of the umbral spectrum. ZSM-74 were calculated using the formulations by Golden (1967) (cf. also Kipper, 1973). The molecular data used by us is summarised in Table I.
π SIMILAR VOLUMES
intensity factors for bands of the C-A transition of the A1F molecule are calculated. A reinvestigation for the lines of (0, 0) band of the C-A system in sunspot spectra is suggested, so as to resolve the question~tble existence of A1F absorption lines in sunspots.
We show empirically how the effect of the instrumental polarization of the spectrograph can distort the shape of the intensity profiles in sunspots. In order to avoid the problems an analysis of the polarization of the. light should be performed at the entrance slit of the spectrograph.
Observations of the MglI h line in the umbrae of five sunspots show a spread of a factor of 3 in peak intensity. This range is larger than, and brackets, the range found in a single umbra by Lites and Skumanich (1982).