Goswami, A; Kameswara Rao, N; Lambert, D. L; Smith, V. V
(Astronomical Society of the Pacific, 1997-03)
A high resolution spectrum (5575 - 8875\AA) of the cool R Coronae Borealis variable S Apodis in its 1993 deep decline is discussed. Narrow or chromospheric emission lines of Na I, K I, Ca II, and Ba II and broad emission ...