The Abundance of S-Process Elements: Temporal and Spatial Trends from Open Cluster Observations
Journal
Date Issued
2022
Author(s)
•
Viscasillas Vázquez, Carlos
•
•
BARATELLA, MARTINA
•
•
•
Randich, Sofia
•
•
Abstract
Spectroscopic observations of stars belonging to open clusters, with well-determined ages and distances, are a unique tool for constraining stellar evolution, nucleosynthesis, mixing processes, and, ultimately, Galactic chemical evolution. Abundances of slow (s) process neutron capture elements in stars that retain their initial surface composition open a window into the processes that generated them. In particular, they give us information on their main site of production, i.e., the low-and intermediate-mass Asymptotic Giant Branch (AGB) stars. In the present work, we review some observational results obtained during the last decade that contributed to a better understanding of the AGB phase: the growth of s-process abundances at recent epochs, i.e., in the youngest stellar populations; the different relations between age and [s/Fe] in distinct regions of the disc; and finally the use of s-process abundances combined with those of α elements, [s/α], to estimate stellar ages. We revise some implications that these observations had both on stellar and Galactic evolution, and on our ability to infer stellar ages.
Volume
8
Issue
2
Start page
64
Issn Identifier
2218-1997
Rights
open.access
File(s)![Thumbnail Image]()
Loading...
Name
universe-08-00064.pdf
Description
Pdf editoriale
Size
949.63 KB
Format
Adobe PDF
Checksum (MD5)
bbe147805001009aef996d096af3ff54