From Filamentary Networks to Dense Cores in Molecular Clouds: Toward a New Paradigm for Star Formation
From Filamentary Networks to Dense Cores in Molecular Clouds: Toward a New Paradigm for Star Formation
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DOI：
10.2458/azu_uapress_9780816531240-ch002
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发表时间：
2013-12
期刊：
影响因子：
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通讯作者：
P. Andr'e;J. Francesco;D. Ward-Thompson;S. Inutsuka;R. Pudritz;J. Pineda
中科院分区：
文献类型：
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作者：
P. Andr'e;J. Francesco;D. Ward-Thompson;S. Inutsuka;R. Pudritz;J. Pineda
最近用赫歇尔空间天文台在亚毫米波长上对银河系最近的恒星形成云进行的研究为我们提供了有关星星形成过程的初始和边界条件的前所未有的图像。赫歇尔的结果强调了星际细丝在星星形成过程中的作用，并与近十年来的数值模拟和理论有着非常好的联系，这些数值模拟和理论一直表明，ISM在所有尺度上都是高度非线性的，星星的形成与自引力细丝密切相关。在这篇综述中，我们追踪了云结构和星星形成的明显复杂性是如何被相对简单的宇宙过程所控制的--从非物质团块到星系尺度。我们强调两个关键的和互补的方面：（一）关键的观测结果与赫歇尔在过去的三年中，沿着从地面上获得的星际结构的运动学的相关新结果，和（二）关键的现有理论模型和星际云结构和星星形成的许多数值模拟。然后，我们综合了一个全面的物理图像，从这些观察和模拟的对抗中产生。
Recent studies of the nearest star-forming clouds of the Galaxy at submillimeter wavelengths with the Herschel Space Observatory have provided us with unprecedented images of the initial and boundary conditions of the star formation process. The Herschel results emphasize the role of interstellar filaments in the star formation process and connect remarkably well with nearly a decade's worth of numerical simulations and theory that have consistently shown that the ISM should be highly filamentary on all scales and star formation is intimately related to self-gravitating filaments. In this review, we trace how the apparent complexity of cloud structure and star formation is governed by relatively simple universal processes - from filamentary clumps to galactic scales. We emphasize two crucial and complementary aspects: (i) the key observational results obtained with Herschel over the past three years, along with relevant new results obtained from the ground on the kinematics of interstellar structures, and (ii) the key existing theoretical models and the many numerical simulations of interstellar cloud structure and star formation. We then synthesize a comprehensive physical picture that arises from the confrontation of these observations and simulations.