Substantial summary: Planetary formation seen with ALMA - Gas and dust properties in protoplanetary disks around young low mass stars
This thesis investigates the properties of the protoplanetary disk surrounding a triple low-mass stellar system, GG Tau A, using interferometric observations of trace molecules such as 12CO, 13CO, C18O, DCO+, HCO+ and H2S, and of multi-wavelength dust emission.