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- W4387156710 abstract "Sulfur isotope ratios have emerged as a promising tool for tracing stellar nucleosynthesis, quantifying stellar populations, and investigating the chemical evolution of galaxies. While extensively studied in the Milky Way, in extragalactic environments they remain largely unexplored. We focus on investigating the sulfur isotope ratios in the Large Magellanic Cloud (LMC) to gain insights into sulfur enrichment in this nearby system and to establish benchmarks for such ratios in metal-poor galaxies. We conducted pointed observations of CS and its isotopologues toward N113, one of the most prominent star-formation regions in the LMC, utilizing the Atacama Pathfinder EXperiment 12~m telescope. We present the first robust detection of C$^{33}$S in the LMC by successfully identifying two C$^{33}$S transitions. Our measurements result in the first direct determination of the $^{34}$S/$^{33}$S isotope ratio, which is 2.0$pm$0.2. Our comparative analysis indicates that the $^{32}$S/$^{33}$S and $^{34}$S/$^{33}$S isotope ratios are about a factor of 2 lower in the LMC than in the Milky Way. Our findings suggest that the low $^{34}$S/$^{33}$S isotope ratio in the LMC can be attributed to a combination of the age effect, low metallicity, and star formation history." @default.
- W4387156710 created "2023-09-30" @default.
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- W4387156710 date "2023-09-26" @default.
- W4387156710 modified "2023-09-30" @default.
- W4387156710 title "Sulfur Isotope Ratios in the Large Magellanic Cloud" @default.
- W4387156710 doi "https://doi.org/10.48550/arxiv.2309.15155" @default.
- W4387156710 hasPublicationYear "2023" @default.
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