Intermediate and massive stars drive fast and powerful isotropic winds that interact with the winds of nearby stars in star clusters and the surrounding interstellar medium (ISM). Wind–ISM collisions generate astrospheres around these stars that contain hot T ∼ 10 7 K gas that adiabatically expands. As individual bubbles expand and collide they become unstable, potentially driving turbulence in star clusters. In this Letter we use hydrodynamic simulations to model a densely populated young star cluster within a homogeneous cloud to study stellar wind collisions with the surrounding ISM. We model a mass-segregated cluster of 20 B-type young main-sequence stars with masses ranging from 3 to 17 M ⊙ . We evolve the winds for ∼11 kyr and show that wind–ISM collisions and overlapping wind-blown bubbles around B-stars mix the hot gas and ISM material, generating Kolmogorov-like turbulence on small scales early in its evolution. We discuss how turbulenc...

中文翻译：

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星团中的风驱动科尔莫哥罗夫湍流

中等质量的大质量恒星驱动快速而强大的各向同性风，这些风与恒星簇和周围的星际介质（ISM）中附近恒星的风相互作用。风—ISM碰撞在这些恒星周围产生了包含热绝热膨胀的T〜10 7 K气体的天体。随着各个气泡的膨胀和碰撞，它们变得不稳定，可能会推动星团中的湍流。在这封信中，我们使用流体动力学模拟来模拟均匀云中人口稠密的年轻恒星团，以研究恒星风与周围ISM的碰撞。我们模拟了质量隔离的20个B型年轻主序星团，其质量范围从3到17 M⊙。我们将风演化了大约11年，并表明风与ISM的碰撞以及B星周围的重叠的吹泡泡将热气和ISM物质混合在一起，在其演化的早期以小规模产生类似于Kolmogorov的湍流。我们讨论湍流如何...