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Neutron Capture Abundances in the Carbon Enhanced StarBD+42 2173: A Signature of the Intermediate (i-) Process?

Presentation #126.06 in the session “AGN and Quasars”.

Published onJan 11, 2021
Neutron Capture Abundances in the Carbon Enhanced StarBD+42 2173: A Signature of the Intermediate (i-) Process?

We present detailed abundances of a moderately metal-poor ([Fe/H] ~ -1), carbon-enhanced star, as derived from spectrum syntheses of a high-resolution spectrum (R = 31,500; obtained with the 3.5-m telescope at Apache Point Observatory). The abundances of the heaviest neutron-capture elements, particularly its Ba and Eu abundances, suggest that BD+42 2173 exhibits the chemical signature of the intermediate (i-) process. The implications of this result and potential origins for BD+42 2173 are discussed.


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