Isotopic lines of SiO in sunspots
β Scribed by M. C. Pande; G. C. Joshi
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 224 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0038-0938
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π SIMILAR VOLUMES
The calculated equivalent widths of some lines of SiO in the umbral spectrum suggest that strong lines of Si28016, Si29016 and Si3~ 16 may be present in the sunspot ultraviolet spectrum. We also find that between 37 000 and 47 000 cm i the quasi-continuous absorption of SiO dominates all other absor
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.
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