Detection of the Actinide Th in an r-process-enhanced Star with Accretion Origin

Detection of the Actinide Th in an r-process-enhanced Star with Accretion Origin

The thorium and six second-peak r -process element (56 ≤ Z ≤ 72) abundances are determined for the α -poor star LAMOST J1124+4535 based on a high-resolution spectrum obtained with the High Dispersion Spectrograph on the Subaru Telescope. The age of J1124+4535 is 11.3 ± 4.4 Gyr using thorium and othe...

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Bibliographic Details
Main Authors:	Qianfan Xing, Gang Zhao, Wako Aoki, Haining Li, Jingkun Zhao, Tadafumi Matsuno, Takuma Suda
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Series:	The Astrophysical Journal
Subjects:	Milky Way stellar halo Stellar abundances Galaxy mergers
Online Access:	https://doi.org/10.3847/1538-4357/ad2fa4

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