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...
Main Authors: | Roederer, Ian U. (Author), Sakari, Charli M. (Author), Placco, Vinicius M. (Author), Beers, Timothy C. (Author), Ezzeddine, Rana (Author), Frebel, Anna (Author), Hansen, Terese T. (Author) |
---|---|
Format: | Article |
Language: | English |
Published: |
American Astronomical Society,
2020-04-17T20:16:24Z.
|
Subjects: | |
Online Access: | Get fulltext |
Similar Items
-
The R-Process Alliance: chemical abundances for a trio of R-process-enhanced stars -- one strong, one moderate, and one mild
by: Cain, Madelyn, et al.
Published: (2020) -
The R-process Alliance: first release from the southern search for R-process-enhanced stars in the galactic halo
by: Hansen, Terese T., et al.
Published: (2020) -
The R-Process Alliance: Chemodynamically Tagged Groups of Halo r-process-enhanced Stars Reveal a Shared Chemical-evolution History
by: Gudin, Dmitrii, et al.
Published: (2022) -
The R-Process Alliance: Chemodynamically Tagged Groups of Halo r-process-enhanced Stars Reveal a Shared Chemical-evolution History
by: Gudin, Dmitrii, et al.
Published: (2022) -
The R -Process Alliance: Discovery of a Low- α , r -process-enhanced Metal-poor Star in the Galactic Halo
by: Ezzeddine, Rana, et al.
Published: (2020)