Age spreads in clusters and associations: the lithium test
classification
🌌 astro-ph
keywords
clusterslithiumabundancesagesassociationsbeenbelowdepletion
read the original abstract
We report the evidence that several low-mass stars (<~0.4 Msun) of the Orion and Upper Scorpius clusters have lithium abundances well below the interstellar value. Due to time-dependent depletion, our result implies stellar ages greater than ~5 Myr, suggesting that star formation has been proceeding for a long time in these systems.
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