晚期演化星辐射流量的简化计算模型

本文提出了计算AGB末期到PPN阶段恒星辐射流量的简化模型,并由此得出了包括散射在内的光谱流量的解析表达式。该模型可较为方便地分析晚型星光谱流量的现测数据并得到有关晚型星的物理结构和状态的一些特点和参数。作为本模型的一个例子,我们得出了源OH/IR 17.7-2.0具有双壳层结构的特点,其中一个尘埃壳层的温度约为800K(内壳层),另一个壳层的温度约为110K(外壳层)。

A SIMPLIFIED CALCULATION MODEL ABOUT THE RADIATION FLUX OF VERY LATE-TYPE STARS

A model used to calculate the radiation flux from the end of AGB stage to PPN was proposed and an analytical expression about the spectral flux, including light scatting of late-type stars obtained by the model. The model may be conveniently used to analyse the observational data of spectral flux from the latetype stars and to get some properties and paramters about physical structure and state of these stars. As an example of this model,the author got the result that source OH/IR 17.7-2.0 has two dust shells,one with the temperature about 800k (inner shell) and the other with about 110k(outer shell).