Poster Abstract

P.16 Ardjan Sturm (Sterrewacht, Leiden)

Tracing planetesimal formation using carbon depletion

The composition of planetesimals is largely determined by the processing of volatile elements in protoplanetary disks. Recent observations of protoplanetary disks find wide-spread depletion of gaseous carbon. In this poster I present observations of seven disks observed in atomic carbon and the carbon depletion fraction in three of these disks based on modeling of the emission. I discuss the implications of the carbon depletion that we found in the outer disk compared with the inner disk in terms of radial drift, dust trapping and planetesimal formation.