摘要
利用对暗分子云L1211的C18O（J＝1—0）分子发射谱线的首次观测结果，计算得到了它的核的物理参数。结果表明暗分子云处在维里平衡状态下所得到的核的质量要大于暗分子云处在局部热动平衡状态下所得到的核的质量。同时，暗分子云处在维里平衡状态下所得到的外流力要大于暗分子云处在局部热动平衡状态下所得到的外流力。但是如果恰当地选择N（C18O）／N（H2）的值，则上述两种质量和两种外流力之间是彼此相互一致的。
Using the observations for the C18O (J = l - 0) emission line of dark molecular cloud L1211 author has computed and obtained the physical parameters of Its core. The computative results show that the mass of core obtained according to the virial equilibrium of the dark molecular cloud is larger than one according to the LTE. And the out flow - force obtained according to the virial equilibrium of the dark molecular cloud is also larger than one'acco.ding to the LTE. If the value of N (C18O)/ N (H2) is selected carefully both of these mass are consistent with each other, and so are both of these outflow - forces.
出处
《中国科学院上海天文台年刊》
1997年第18期147-150,共4页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
基金
国家自然科学基金
中国科学院天文口资助
射电天文联合实验室资助
