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Study of the puzzling abundance pattern of the neutron-capture elements in LMC star J053253.51–695915.1 被引量:1

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摘要 Object J053253.51–695915.1(J053253)in the Large Magellanic Cloud(LMC)is reported as a young stellar object(YSO).Its chemical abundances reflect the initial composition of the gas cloud in which the star formed.However,the discovery that this star shows the enhancement of the neutron(n)-capture elements and the higher ratio of the heavier n-capture elements relative to the lighter n-capture elements is puzzling.Using an abundance decomposed method,we explore the astrophysical origins of the n-capture elements in this star.We find that the abundance characteristic of the higher ratio of the heavier n-capture elements to the lighter n-capture elements can be explained by the pollution of the r-process event and the contamination of the s-process material.
出处 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2020年第4期129-138,共10页 天文和天体物理学研究(英文版)
基金 supported by the National Natural Science Foundation of China(Grant Nos.11673007,11547041,11643007 and 11773009) the Natural Science Foundation of Hebei Province(Grant No.A2019208194)。
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