Abstract
A previous paper by the author contains an account of the analysis of the most characteristic bands of ZrO into three triplet systems, a, (3, and y, and the vibrational analysis of those systems. It also gives an account of the occurrence of ZrO bands in the S-type stars and of the previous work of other investigators on the subject. Plates 1 and 2 in that paper illustrate the spectrum from X 4300 to X 7700 A and show the very complicated nature of its structure. They are reproductions of spectrograms taken with a dense prism from X 6200 to X 7700 A and with the 10-foot grating in the first order from X 4300 to X 6585 A.

This publication has 0 references indexed in Scilit: