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True solar analogues in the open cluster M67
K. Biazzo, L. Pasquini, P. Bonifacio +2
The solar analogues are fundamental targets for a better understanding of our Sun and Solar System. Notwithstanding the efforts, this research is usually limited to field stars. Th…
A Splinter Session on the Thorny Problem of Stellar Ages
Eric E. Mamajek, David Barrado y Navascues, Sofia Randich +4
Accurate stellar ages remain one of the most poorly constrained, but most desired, astronomical quantities. Here we briefly summarize some recent efforts to improve the stellar age…
Current views on low-mass star formation
Francesco Palla, Sofia Randich
The process that leads to the formation and early evolution of low-mass stars is in a broad sense well understood theoretically and carefully traced observationally. The largest un…
Evolution of lithium in solar-type stars: clues from intermediate age clusters
S. Randich, L. Pasquini, R. Pallavicini
We present Li abundances for 14 solar-type stars in the intermediate age (~ 2 Gyr) clusters IC 4651 and NGC 3680. The log n(Li) vs. effective temperature distributions are compared…