论文标题
双重麻烦：Gaia揭示了（原始） - 行天然系统，这些系统可能会遇到多个密集的恒星环境
Double trouble: Gaia reveals (proto)-planetary systems that may experience more than one dense star-forming environment
论文作者
论文摘要
行星系统似乎同时形成了年轻的恒星形成区域内的年轻恒星。在这些环境中，生存的机会以及这些系统的长期演变受到因素的影响，例如与其他恒星的动态相互作用以及来自大型恒星的光蒸发。这些相互作用也可能导致年轻的恒星从出生地区弹出并成为逃亡者。我们介绍了在Gaia Dr2数据中发现的猎户座星云群（ONC）附近的此类失控恒星在弹出过程中保留其光盘的示例。一旦在他们的道路上设定，这些逃亡者通常不会遇到任何其他密集的地区，这可能会危害其光盘或年轻行星系统的生存。但是，我们表明，在我们的情况下，星盘系统可能会从一个密集的恒星形成区域弹出，遇到第二个密集的区域。尽管第二个区域中弹出的星盘系统的相互作用不太可能与他们的出生区域相同，但第二次相遇会从恶性外部效果中增加椎间盘或行星系统的风险。
Planetary systems appear to form contemporaneously around young stars within young star-forming regions. Within these environments, the chances of survival, as well as the long-term evolution of these systems, are influenced by factors such as dynamical interactions with other stars and photoevaporation from massive stars. These interactions can also cause young stars to be ejected from their birth regions and become runaways. We present examples of such runaway stars in the vicinity of the Orion Nebula Cluster (ONC) found in Gaia DR2 data that have retained their discs during the ejection process. Once set on their path, these runaways usually do not encounter any other dense regions that could endanger the survival of their discs or young planetary systems. However, we show that it is possible for star-disc systems, presumably ejected from one dense star-forming region, to encounter a second dense region, in our case the ONC. While the interactions of the ejected star-disc systems in the second region are unlikely to be the same as in their birth region, a second encounter will increase the risk to the disc or planetary system from malign external effects.
