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Li (and other light elements) and stellar activity
Author(s) -
Cutispoto G.
Publication year - 2002
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/1521-3994(200208)323:3/4<325::aid-asna325>3.0.co;2-1
Subject(s) - abundance (ecology) , stars , physics , astrophysics , stellar evolution , astronomy , ecology , biology
The study of light elements abundances can give fundamental clues on many astrophysical problems. It is still not clear if the large spread of Li abundances observed in both clusters and field stars reflects a genuine dispersion of abundances or if it is due to phenomena linked to stellar magnetic activity. In this paper both observational and theoretical results on Li abundance are presented and discussed. The picture that arises is complex and difficult to be understood in detail. Although activity alone does not seem able to account for the spread observed in Li abundances, it is, at least for late type stars, unsafe to assume that the spread is entirely due to genuine Li depletion. Recent data on Be abundance measurements in old clusters, that can shed further light on the activity vs. light elements abundances relationships, are also analyzed.