Sriramachandran, P; Shanmugavel, R; Bagare, S. P; Rajamanickam, N
(Springer, 2009-09)
A high resolution spectrum of a sunspot umbra is used for identification of rotational lines due to (0, 0) band of the A 2Π–X 2Σ+ system and (0, 0), (1, 1), and (2, 2) bands of the B 2Σ+–X 2Σ+ system of the molecule ...