On MgH line intensities in sunspot unbrae

Abstract

The line intensities of the umbral MgH molecules reported by Sotirovski (1971) are re-analysed utilizing the latest laboratory data. It appears probable that because of a neglect of the role of blurring in producing stray light, Sotirovski's (1971) results are under estimated. The need of a laboratory check upon the theoretical oscillator strengths of the weak bands (Triangle Nu not = 0) calculated by Kirby et al. (1979) is steressed.