The R-Process Alliance: a comprehensive abundance analysis of HD 222925, a metal-poor star with an extreme R-process enhancement of [Eu/H] = −0.14*

The R-Process Alliance: a comprehensive abundance analysis of HD 222925, a metal-poor star with an extreme R-process enhancement of [Eu/H] = −0.14*

We present a detailed abundance analysis of the bright (V = 9.02), metal-poor ([Fe/H] = -1.47 ± 0.08) field red horizontal-branch star HD 222925, which was observed as part of an ongoing survey by the R-Process Alliance. We calculate stellar parameters and derive abundances for 46 elements based on...

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Bibliographic Details
Main Authors: Roederer, Ian U., Sakari, Charli M., Placco, Vinicius M., Beers, Timothy C., Ezzeddine, Rana, Frebel, Anna, Hansen, Terese T.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Published: American Astronomical Society 2020
Online Access:https://hdl.handle.net/1721.1/124740

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