Title The abundance of S-process elements: temporal and spatial trends from open cluster observations /
Authors Magrini, Laura ; Viscasillas Vazquez, Carlos ; Casali, Giada ; Baratella, Martina ; D’orazi, Valentina ; Spina, Lorenzo ; Randich, Sofia ; Cristallo, Sergio ; Vescovi, Diego
DOI 10.3390/universe8020064
Full Text Download
Is Part of Universe.. Basel : MDPI. 2022, vol. 8, iss. 2, art. no. 64, p. [1-10].. eISSN 2218-1997
Keywords [eng] Disk nucleosynthesis ; Galaxy: abundances ; Open clusters and associations: general
Abstract [eng] 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.
Published Basel : MDPI
Type Journal article
Language English
Publication date 2022
CC license CC license description