), which is strong. The pair 5700, 5782 (
) is probably also present. The former lines are too far in the ultra-violet to have been studied in the stars, and the latter are too faint.
ZINC (30)
The principal singlet
is at 2138, and has therefore not been observed in stellar spectra. The
lines at 4722, 4810, are seen in the stellar sequence, where they appear at