A computer-generated galaxy model with long-lived two-armed spiral structure
A computer-generated galaxy model with long-lived two-armed spiral structure
复制标题
计算机生成的具有长寿命双臂螺旋结构的星系模型
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
B. Sundelius
中科院分区：
文献类型：
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作者：
M. Thomasson;B. Elmegreen;K. J. Donner;B. Sundelius
一个长寿命的双臂螺旋已经在一个N体计算机模拟的星系中产生，该星系具有静态的凸起和晕以及由60，000个粒子组成的活动盘。螺旋持续了大约三个模式革命没有严重的扭曲，并持续了至少两个以上的革命与扭曲和分叉所造成的日益cluelinism。这表明，如果星星的形成和模拟中不存在的其他热源保持稳定的星际介质，那么无棒无相互作用星系中的双臂大设计螺旋可以是长寿的。
A long-lived two-armed spiral has been generated in an N-body computer simulation of a galaxy with a static bulge and halo and an active disk composed of 60,000 particles. The spiral lasts for about three pattern revolutions without severe distortion and persists for at least two more revolutions with distortions and bifurcations resulting from an increasingly clumpy ISM. This suggests that two-armed grand design spirals in nonbarred noninteracting galaxies can be long-lived if star formation and other heat sources not present in the simulation maintain a steady interstellar medium.