2024
DOI: 10.3847/1538-4357/ad5549
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Interstellar Nitrogen Isotope Ratios: Measurements on Tracers of C14N and C15N

J. L. 家梁 Chen 陈,
J. S. 江水 Zhang 张,
C. Henkel
et al.

Abstract: The nitrogen isotope ratio 14N/15N is a powerful tool to trace Galactic stellar nucleosynthesis and constrain Galactic chemical evolution. Previous observations have found lower 14N/15N ratios in the Galactic center and higher values in the Galactic disk. This is consistent with the inside-out formation scenario of our Milky Way. However, previous studies mostly utilized double isotope ratios also including 12C/13C, which introduces additional uncertainties. Here we present observations of C14N and its rare is… Show more

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