Jormungandr: A Large Substructure Circling the Milky Way Identified from Gaia DR3 Data

We report the discovery of a large substructure in the Milky Way passing through the solar neighborhood, detected in actions $\left({J}_{\phi },{J}_{{\rm{R}}}\right)$ calculated from Gaia DR3 data. We perform extensive tests to evaluate the selection effects present in the sample and conclude that t...

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Bibliographic Details
Main Authors: Xianhao Ye, Gang Zhao, Carlos Allende Prieto, Jingkun Zhao, Yong Yang, Wenbo Wu
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
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Online Access:https://doi.org/10.3847/1538-4357/adbc5f
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