Joshi, G. C.; Punetha, L. M.; Pande, M. C.
(1979)
The calculated equivalents widths of some lines of SiO in the umbral spectrum suggest that strong lines of Si²⁸ O¹⁶ , Si²⁹ O¹⁶ , and Si³⁰ O¹⁶, may be present in the sunspot ultraviolet spectrum. We also find that between ...