A new look at CO outflows in the dark cloud complex near IC 5146

This paper presents the results of a search for CO outflows in a dark cloud complex near IC 5146 carried out using the 45-m telescope at Nobeyama Radio Observatory (HPBW = 17) equipped with the S115Q multi-beam receiver system. A CO outflow was discovered by the present survey toward IRAS 21428+4732, whose physical parameters, such as molecular mass, mechanical momentum, and kinetic energy, were derived. In addition to IR-AS 21428+4732, there are 5 other IRAS point sources accompanied by CO outflows in this cloud complex, which were found by earlier observations with lower angular resolutions (HPBW similar or equal to 1'). We also made (CO)-C-12 (J = 1-0), (CO)-C-13 (J = 1-0), and (CO)-O-18 (J = 1-0) observations toward the 5 sources with the 45-m telescope in order to obtain new data with higher angular resolutions. CO maps as well as physical parameters of these outflows obtained by the 45-m telescope are also presented.