论文标题
由于行星行星相互作用而引起的原星磁盘的尘埃恢复
Dust resurgence in protoplanetary disks due to planetesimal-planet interactions
论文作者
论文摘要
关于情节磁盘的灰尘含量的观察数据表明，附近恒星形成区域中磁盘中的灰尘含量中位数的灰尘含量似乎从约1 MYR增加到大约2 MYR，然后随着时间的推移而下降。这种行为挑战了小尘土晶粒通过积累大物体并在短时间内向内漂移（小于1 MYR），从而挑战了模型。在这封信中，我们探讨了在模型的框架内调和这种差异的可能性，在该框架中，行星的早期形成动态搅动附近的行星，并在它们之间造成高能量影响，从而导致第二代灰尘的产生。我们表明，在代表性的磁盘架构套件中，这种过程可以自然地解释观察到的尘埃演化。
Observational data on the dust content of circumstellar disks show that the median dust content in disks around pre-main sequence stars in nearby star forming regions seem to increase from about 1 Myr to about 2 Myr, and then decline with time. This behaviour challenges the models where the small dust grains steadily decline by accumulating into larger bodies and drifting inwards on a short timescale (less than about 1 Myr). In this Letter we explore the possibility to reconcile this discrepancy in the framework of a model where the early formation of planets dynamically stirs the nearby planetesimals and causes high energy impacts between them, resulting in the production of second-generation dust. We show that the observed dust evolution can be naturally explained by this process within a suite of representative disk-planet architectures.
