The violet opacity in the red peculiar stars - III. Spectral analysis of the SC star GP Ori

Medium-resolution (1.5-2.5 Angstrom) spectrum has been obtained for SC star GP Ori in a wide range of wavelengths from 3730 to 6250 Angstrom. It is ch aracterised mainly by strong atomic lines, as well as moderately strong ban ds of the CN violet system and CH (0,0) and (0,1) bands at 4315 and 4890 An gstrom. Weak bands of C-2, C-3, and ZrO molecules are observed, however, no evidence is found for the presence of either SiC2 (Merrill-Sanford bands) or YO. The most prominent atomic lines along with the NaI D12 are those of Ca II (K,H), Ca I at 4227 Angstrom, Sr I at 4607 Angstrom, SrII at 4077 and 4215 Angstrom, and Ba II at 4554 Angstrom. H-beta seems to be in emission.