The low mas end of the young cluster IC2391
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By collecting optical and infrared photometry, as well as medium resolution spectroscopy, we have discovered a sample of low mass stars and brwon dwarfs in the young cluster IC2391. Using the lithium depletion boundary near the substellar limit, we have estimated the age of the cluster as ~50 Myr. We have also estudied the H(alpha) emission in this sample.
To appear in IAU Symp. 211 on "Brown Dwarfs" ed. E. Martin
To appear in IAU Symp. 211 on "Brown Dwarfs" ed. E. Martin