论文标题
面纱中的凹痕：猎户座的原始反馈
Dents in the Veil: Protostellar feedback in Orion
论文作者
论文摘要
最近对恒星反馈的兴趣已增加，因为新的研究表明，年轻大型恒星的辐射和机械反馈会显着调节星际培养基（ISM）的物理和化学组成。最近的索非亚[CII] 158对猎户座面纱的微米观察结果表明，扩展的气泡由恒星风能供电，并受到先前活跃的电离巨星的分子流出的影响。我们旨在通过寻找与面纱外壳相互作用的喷气机/流出来研究整个面纱外壳的机械反馈并确定这些碰撞的起源/驾驶机制。 In the light of these findings, as well as the momenta of the dents and their dynamical timescales, we propose that the dents are created by the interaction of collimated jets/outflows from protostars with luminosities ranging from 10$^3$ to 10$^4$ $L_\odot$ indicating B-type stars in the Orion star-forming cloud with the surrounding Veil shell.但是，要确定驾驶星的原始弹射点/流出点可能已经移动，这是一项挑战。我们得出的结论是，扩展的面纱壳的动力学不仅受梯形簇中的O型恒星的影响，而且还受猎户座星云中的巨大恒星（尤其是B型）的影响。来自具有一系列质量的原恒星的机械反馈似乎在确定[HII]区域的形态并将湍流注入培养基中起着重要作用。
Interest in stellar feedback has recently increased because new studies suggest that radiative and mechanical feedback from young massive stars regulate the physical and chemical composition of the interstellar medium (ISM) significantly. Recent SOFIA [CII] 158 micron observations of the Orion Veil revealed that the expanding bubble is powered by stellar winds and influenced by previously active molecular outflows of ionizing massive stars. We aim to investigate the mechanical feedback on the whole Veil shell by searching for jets/outflows interacting with the Veil shell and determining the origin/driving mechanisms of these collisions. In the light of these findings, as well as the momenta of the dents and their dynamical timescales, we propose that the dents are created by the interaction of collimated jets/outflows from protostars with luminosities ranging from 10$^3$ to 10$^4$ $L_\odot$ indicating B-type stars in the Orion star-forming cloud with the surrounding Veil shell. However, it is challenging to pinpoint the driving stars as they may have moved from the original ejection points of the jets/outflows. We conclude that the dynamics of the expanding Veil shell is influenced not just by the O-type stars in the Trapezium cluster, but also by less massive stars, especially B-type, in the Orion Nebula. Mechanical feedback from protostars with a range of masses appears to play an important role in determining the morphology of [HII] regions and injecting turbulence into the medium.
