Enanas Marrones y Objetos de Masas Planetarias en Regiones de Formación Estelar

M. GOMEZ

Tafí del Valle, Tucumán

Jornada; Segundas Jornadas de Astrofísica Estelar; 2011

INSUGEO - Tucumán, Observatorio Astronómico de Córdoba

In this contribution we present the properties of substellar mass objects and discuss the different formation mechanisms of brown dwarfs.  In particular we analyze the so-called T Tauri formation mode, with disks and jets, and its implications for the existence of planetary systems associated with subestellar mass objects or brown dwarfs. We also briefly discuss the properties of PLANEMOS (´´planetary mass objects´´). Finally we consider the contribution of these objects to the Initial Mass Function (IMF). Although brown dwarfs and planetary mass objects seem to be as common as stars in the Galaxy their precise contribution to the IMF still remains uncertain.