Abstract:
The protoplanetary disc is the birth place of planets and the material provider for its central star. Composed of gas and dust, both components can now be observed in high resolution using the Atacama Large Millimeter Array (ALMA). These observations reveal the diversity of discs in dust/gas morphologies and properties of discs, shaped by a combination of intrinsic and extrinsic factors. In this talk, I will present the understanding of long-term disc evolution through observations and modelling. The talk will cover: a) the ALMA disc survey in the Serpens star-forming region and its implications for environmental effects; b) a new mechanism for forming radially compact discs, with and without ring-like structures, and c) the possibilities of distinguishing between two mechanisms driving disc evolution—viscosity and magnetised winds—by measuring gas disc sizes.
