ULTRAVIOLET DIB AT 1369 ANGSTROM ARISING IN MOLECULAR CLOUDS

Hubble Space Telescope (HST) and IUE observations of the weak unidenti fied interstellar line 1369 Angstrom in nine early type stars are disc ussed. This absorption feature might be a diffuse interstellar band (D IB). We have found good correlation between the equivalent widths of t he 1369 Angstrom line and the interstellar CO A(1) Pi-X-1 Sigma (6-0) band at 1367.5 Angstrom and no correlation with the interstellar atomi c lines of NiII, NaI, HI. This indicates that carrier of this unidenti fied feature is associated with molecular clouds.