【摘要】 本文利用N体数值模拟方法,讨论了旋涡星系中恒星形成对旋涡结构的维持作用。在假定恒星是在一定密度区域中形成以及恒星诞生率为1.0M_⊙/年的情况下,模拟结果表明,旋涡图象的维持时间是未考虑恒星形成模型的2.3倍。更多还原

【Abstract】 The effect of star formation on the maintenance of spiral structure has been discussed using three dimensional N-body simulation. Assuming that stars are formed in a certain density region and the average star formation rate is 1.0 M /yr, the spiral structure could be maintained for 2.8 × 109 yr. By ignoring star formation, the spiral structure could fade out after 1.2× 109 yr.更多还原