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astro-ph2003
Close Companions to Nearby Young Stars from Adaptive Optics Imaging on VLT and Keck
Karl E. Haisch, Ray Jayawardhana, Alexis Brandeker +1
We report the results of VLT and Keck adaptive optics surveys of known members of the Eta Chamaeleontis, MBM 12, and TW Hydrae (TWA) associations to search for close companions. Th…
astro-ph2003
Between Cool Stars and Hot Planets: Origins of Brown Dwarfs
Ray Jayawardhana
Brown dwarfs, which straddle the mass range between stars and planets, appear to be common both in the solar neighborhood and in star-forming regions. Their ubiquity makes the ques…