What can we learn from the r-element distribution of CS 22892-052?

Content Provider	Semantic Scholar
Author	Goriely, Stephane Arnould, Marcel
Copyright Year	1997
Abstract	The striking similarity between the solar distribution of r-element abundances in the 56 ≤ Z ≤ 76 range and the corresponding abundance pattern observed in the ultra-metalpoor star CS 22892-052 is analysed. It is found that such an observation does not necessarily imply that the whole A >∼ 70 distribution of r-nuclides, including Th, suspected to have been engulfed in CS 22892-052 at the same time as the detected elements is solar. Such a conclusion derives from the finding that an arbitrary superposition of r-process events that does not fit the whole solar r-process pattern can also account for the CS 22892-052 observations. The interpretation of this result and its implications are discussed.
File Format	PDF HTM / HTML
Volume Number	322
Alternate Webpage(s)	http://aa.springer.de/papers/7322003/2300l29.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article