New Rare Earth Element Abundance Distributions for the Sun and Five r-Process-Rich Very Metal-Poor Stars - Astrophysics > Solar and Stellar AstrophysicsReportar como inadecuado




New Rare Earth Element Abundance Distributions for the Sun and Five r-Process-Rich Very Metal-Poor Stars - Astrophysics > Solar and Stellar Astrophysics - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We have derived new abundances of the rare-earth elements Pr, Dy, Tm, Yb, andLu for the solar photosphere and for five very metal-poor, neutron-capturer-process-rich giant stars. The photospheric values for all five elements arein good agreement with meteoritic abundances. For the low metallicity sample,these abundances have been combined with new Ce abundances from a companionpaper, and reconsideration of a few other elements in individual stars, toproduce internally-consistent Ba, rare-earth, and Hf 56<= Z <= 72 elementdistributions. These have been used in a critical comparison between stellarand solar r-process abundance mixes.



Autor: Christopher Sneden, James E. Lawler, John J. Cowan, Inese I. Ivans, Elizabeth A. Den Hartog

Fuente: https://arxiv.org/







Documentos relacionados