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Ultraviolet DIB at 1369 A Arising in Molecular Clouds

Gnacinski, P.; Sikorski, J.; Kaczmarczyk, G.

Hubble Space Telescope (HST) and IUE observations of the weak unidentified interstellar line 1369 A in nine early type stars are discussed. This absorption feature might be a diffuse interstellar band (DIB). We have found good correlation between the equivalent widths of the 1369 A line and the interstellar CO A¹Pi-X¹Sigma (6…