Gaia DR3 of substructure in the stellar halo

The debris from past merger events is expected and, to some extent, know n to populate the stellar halo near the Sun. We aim to identify and characterise such merger debris...过往并合事件产生的天体残骸，不仅已被理论预期存在，且在一定程度上已被证实分布于太阳附近的恒星晕（stellar halo）中。本研究旨在识别并表征这类并合残骸。