The Detection of Low Eu Abundances in Extremely Metal-poor Stars and the Origin of r -Process Elements | Zendy

Yuhri Ishimaru | Zendy; Shinya Wanajo | Zendy; Wako Aoki | Zendy; Sean G. Ryan | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

The Detection of Low Eu Abundances in Extremely Metal-poor Stars and the Origin of r -Process Elements

Author(s) -

Yuhri Ishimaru,

Shinya Wanajo,

Wako Aoki,

Sean G. Ryan

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/381496

Subject(s) - stars , astrophysics , supernova , abundance (ecology) , physics , spectrograph , galactic halo , r process , halo , nucleosynthesis , low mass , astronomy , galaxy , spectral line , fishery , biology

We report abundance analyses of three extremely metal-poor stars with [Fe/H]$\lesssim -3$, using the Subaru High Dispersion Spectrograph (HDS). All arefound to have sub-solar values of [Eu/Fe]. Comparison with our chemicalevolution model of the Galactic halo implies the dominant source of Eu to bethe low-mass end of the supernova mass range. Future studies of stars with lowEu abundances will be important to determine the r-process site.Comment: 7 pages, 2 figures, accepted for publication in the Astrophysical Journal Letter

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research