论文标题
一个巨大的开普勒原始磁盘，在中央分子区域具有飞行诱导的螺旋
A massive Keplerian protostellar disk with flyby-induced spirals in the Central Molecular Zone
论文作者
论文摘要
吸积盘是低质量恒星形成范式中必不可少的组成部分。最近的观察结果进一步确定了围绕Flybys扰动的低质量前序列恒星的磁盘。围绕更大的恒星以类似方式发展成为一个紧迫的问题。我们报告发现在射手中心周围射手座C云中的32个太阳质原子体围绕的几个太阳能团体发现了一个开普勒磁盘。该磁盘具有重力稳定，带有两个嵌入式螺旋。对分析解决方案和数值模拟的组合分析表明，形成螺旋的最有可能的情况是通过近距离飞行引起的外部扰动，并且发现了一个具有预期参数的持久性。从磁盘介导的积聚的意义上讲，与低质量恒星相对于低质量恒星，以相似的方式形成了庞大的早期O型恒星，而且以类似的方式形成了磁盘，而且还以Flyby Impacted Impacted Impacted Impacted Impacted Impacted Impacted Impacted s介导。
Accretion disks are an essential component in the paradigm of the formation of low-mass stars. Recent observations further identify disks surrounding low-mass pre-main-sequence stars perturbed by flybys. Whether disks around more massive stars evolve in a similar manner becomes an urgent question. We report the discovery of a Keplerian disk of a few solar masses surrounding a 32 solar-mass protostar in the Sagittarius C cloud around the Galactic Center. The disk is gravitationally stable with two embedded spirals. A combined analysis of analytical solutions and numerical simulations demonstrates that the most likely scenario to form the spirals is through external perturbations induced by a close flyby, and one such perturber with the expected parameters is identified. The massive, early O-type star embedded in this disk forms in a similar manner with respect to low-mass stars, in the sense of not only disk-mediated accretion, but also flyby-impacted disk evolution.
