论文标题
使用Gaia Edr3对鲜红色的云层中火箭效应的研究
Investigation of Rocket Effect in Bright-Rimmed Clouds using Gaia EDR3
论文作者
论文摘要
明亮的云层（BRC）是探索恒星形成的辐射驱动的内爆模式的出色实验室，因为它们显示了触发恒星形成的证据。在我们先前的研究中，由于众所周知的“火箭效应”，BRC 18被发现远离电离HII区域的方向。基于BRC 18和候选年轻恒星对象（YSO）的假设是运动耦合并使用最新的Gaia EDR3测量值的假设，我们发现候选YSO的相对适当运动表现出从电离源移动的趋势。我们使用BRC 18作为原型，对21种BRC进行了进一步的分析，其中大多数显示出类似的趋势。对于大多数BRC，候选YSO的相对适当运动的中值角与从电离源到BRC中央IRAS源的天线方向的角度相似。基于皮尔森（Pearson）和斯皮尔曼（Spearman）的相关系数，我们发现这两个角度之间存在很强的相关性，这两个角度得到了kolmogorov-smirnov（K-s）测试的进一步支持。这两个角度之间的强相关性支持天平的BRC中的“火箭效应”。
Bright-rimmed clouds (BRCs) are excellent laboratories to explore the radiation-driven implosion mode of star formation because they show evidence of triggered star formation. In our previous study, BRC 18 has been found to accelerate away from the direction of the ionizing Hii region because of the well known "Rocket Effect". Based on the assumption that both BRC 18 and the candidate young stellar objects (YSOs) are kinematically coupled and using the latest Gaia EDR3 measurements, we found that the relative proper motions of the candidate YSOs exhibit a tendency of moving away from the ionizing source. Using BRC 18 as a prototype, we made our further analysis for 21 more BRCs, a majority of which showed a similar trend. For most of the BRCs, the median angle of the relative proper motion of the candidate YSOs is similar to the angle of on-sky direction from the ionizing source to the central IRAS source of the BRC. Based on Pearson's and Spearman's correlation coefficients, we found a strong correlation between these two angles, which is further supported by the Kolmogorov-Smirnov (K-S) test on them. The strong correlation between these two angles supports the "Rocket Effect" in the BRCs on the plane-of-sky.
