THE NEW OBSERVATION OF (CO)-O-18(J=1-0) MOLECULAR-EMISSION IN THE CEPHEUS OB3 MOLECULAR CLOUD

We present the (CO)-O-18(J = 1-0) observation of the Cep OB3 molecular cloud. The observation was made for a week in 1993 December with the new 4 m millimeter telescope at Nagoya University. The extent of the ( CO)-O-18(J = 1-0) emission indicates that total area coverage of the m ap is substantially less than 2.degrees 8 x 1.degrees 4 structure. A p ortion of the Cep OB3 molecular cloud has been mapped in the (CO)-O-18 (J = 1-0) line on a completely sampled grid with a 2.'0 spacing. The p hysical parameters of the (CO)-O-18(J = 1-0) core are derived. The (CO )-O-18(J = 1-0) emission is also tracing the dense gas in the core. Th e large dense core appears to have been disturbed significantly by the star formation activity within it.