Hierarchical clustering in Vela OB2 complex

We identify hierarchical structures in the Vela OB2 complex and the cluster pair Collinder 135 and UBC 7 with Gaia EDR3 using the neural network machine-learning algorithm...我们利用盖亚星表第三早期数据发布版（Gaia EDR3）的观测数据，采用神经网络机器学习算法，识别出船帆座OB2星协（Vela OB2 complex）以及星团对林德布拉德135（Collinder 135）与UBC 7的层级结构。