IRAS-2306- EVIDENCE FOR A POSSIBLE CLOUD-CLOUD COLLISION(1451 )

I analyze the observed line wing data of the J = 2-1 (CO)-C-12 and (CO )-C-13 lines toward the extended cool cirrus object IRAS 2306+1451, re levant to high-velocity gas (going away from two main clouds). Here I find evidence of a collision between a cloud slightly north of the IRA S object with a similar cloud south of the IRAS object. The two main m olecular clouds, with masses approximate to 7 and 10 M. and sizes near 0.3 pc, collided near approximate to 150 pc from the Sun toward galac tic longitude 89 degrees and latitude -41 degrees. In this cloud-cloud collision model, the bottom of the northern cloud, going away from Su n and to the south, met the top of the southern cloud coming toward th e Sun and to the north. At the impact, there is a cool clump of coales ced gas with mass approximate to 1 M. and size approximate to 0.1 pc a cross. This clump is not likely to collapse to form a star; it will li kely disperse later. The Kitt Peak observations show two small high-ve locity gas clouds. Each of the two moving cloudlets has an accumulated mass approximate to 0.2 M. and a density decreasing with distance fro m the impact site. The cloud-cloud collision theory provides an interp retation in the form of two broad ''escaping cloudlets,'' going away f rom the impact site. (C) 1995 American Astronomical Society.