Retorne
Título              : Jets, Disintegrating Multiple Systems, and Brown Dwarfs - Pieces of a Puzzle  
Conferencista: Bo Reipurth, Center for Astrophysics and Space Astronomy University of Colorado at Boulder  
Data                : Quarta-Feira , 21/02/01 e 15H 30M  
Local               : Auditório L.B.F. Clauzet - Água Funda  
Sumário         :
New evidence shows that many newborn stars are multiple. Such systems are dynamically unstable and rapidly disintegrate. When one member is ejected, two of the remaining stars form a tight binary in a highly eccentric orbit. At periastron, the binary members dissipate energy through disk-disk collisions, and thus produce powerful outflow activity, resulting in the spectacular Herbig-Haro jets. If a member is ejected shortly after birth, before it has accumulated enough mass to exceed the hydrogen burning limit, it will form a brown dwarf.