Cepheus OB3分子云中C^(18)O(J=1-0)团块的稳定性研究(英文)

A STUDY OF THE DYNAMICAL STABILITY OF THE C^(18)O (J=1-0) CLUMPS IN CEPHEUS OB3 MOLECULAR CLOUD

银河系中的巨分子复合体 ,例如CepOB3分子云 ,在其星际分子的射电谱线成图时表现出成团块的现象。利用它们的物理参数以及维里理论研究了CepOB3分子云C18O(J =1- 0 )团块的动力学稳定性。计算结果表明 :除L12 11的C18O(J =1- 0 )团块外 ,其它所有的C18O(J =1- 0 )团块都存在关系式 Pext Pmax 和 Rmin R。也就是说除L12 11的C18O(J =1- 0 )团块外 ,其它所有的C18O(J =1- 0 )团块均是动力学稳定的。由此可信在L12 11的C18O(J =10 )团块中存在恒星形成过程。

The dynamical stability of the C 18O(J=1-0) clumps in the Cep OB3 with the virial theorem using their physical parameters is studied. The results indicate that there are P ext P max and R min R in all of the C 18O(J=1-0) clumps except the L1211 C 18O(J=1-0) clump, i.e. all of the C 18O(J=1-0) clumps except the L1211 C 18O(J=1-0) clump are found to be dynamically stable, and there may be a star forming process in the L1211 C 18O(J=1-0) clump.