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Early r-process Enrichment and Hierarchical Assembly Across the Sagittarius Dwarf Galaxy

  • Authors: Xiaowei Ou, 筱葳 欧, Alexander Yelland, Anirudh Chiti, Anna Frebel, Guilherme Limberg, Mohammad K. Mardini

Xiaowei Ou et al 2025 The Astronomical Journal 169 .

  • Provider: AAS Journals

Caption: Figure 1.

Phase space distribution of the Sgr core and stream stars from this study (yellow dots) and the stream members from G. Limberg et al. (2023), compared with the N-body model from E. Vasiliev et al. (2021). From top to bottom, the first panel shows the distribution of the stars in the heliocentric Sgr coordinate system. The measured radial velocities and adopted proper motions from Gaia as a function of Λ are shown in the second to last panels. The phase space target selection was performed in coordinates and proper motion space, and later confirmed with radial velocities from the observed spectra (see Section 2).

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