Properties of transition circumstellar disk: Ophiuchis region

GISELA A. ROMERO; M. R. SCHREIBER; LUCAS A. CIEZA; MARIANA ORELLANA; B. MERIN

Concepción

Encuentro; VIII Reunion Anual de la Sociedad chilena de Astronomia; 2010

Sociedad chilena de Astronomia

Circumstellar disks around Pre-Main-Sequence (PMS) stars are the sites of planet formation. Spectacular candidates for disks perhaps presently forming planets are the so-called transition disk systems  with their optically thin inner disks and optically thick outer disks. Several mechanisms have been proposed to explain their inner opacity holes, i.e. planet formation, grain growth, photoevaporation, tidal truncation in close binaries, and their relative importance is currently completely unconstrained. Here, we present a project which consists of performing multiwavelength observations of newly discovered transition disks to distinguish between the four mentioned scenarios and identify candidates for hosting forming planets to be followed-up with Herschel and ALMA observational capabilities.