A new model of the structure of spiral galaxies based on propagating star formation — II. The effect of a spiral density wave
A new model of the structure of spiral galaxies based on propagating star formation — II. The effect of a spiral density wave
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基于传播恒星形成的螺旋星系结构新模型——II 螺旋密度波的影响
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
P. Alexander
中科院分区：
文献类型：
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作者：
J. Sleath;P. Alexander
根据传播星星形成的原理，我们建立了一个新的星系结构模型。与早期使用这种机制的模拟不同，它将银河系分子云表示为不同的实体，这些实体在平滑的引力场中通过碰撞相互作用。这使我们能够在传播的星星形成过程中引入一个代表恒星种群基本动力学的势，并包括描述星际介质的更现实的物理学。在本文中，我们调查更详细的影响，这样的潜力，即螺旋密度波，无论是对所产生的结构和星星的形成率。
We have constructed a new model for galactic structure based on the principles of propagating star formation. Unlike earlier simulations using this mechanism, it represents the galactic molecular clouds as distinct entities which move, interacting with one another through collisions, in a smooth gravitational field. This allows us to superimpose on the propagating star formation a potential which represents the underlying dynamics of the stellar population, and to include more realistic physics describing the interstellar medium. In this paper we investigate in more detail the effects of one such potential, namely a spiral density wave, both on the resulting structures and on the star formation rate.