Tuesday 21 Jan 2020[Journal Club] Title: Evolution of Sulphur in Protoplanetary Disks

Shrishmoy Ray - University of Exeter

4th Floor Interaction Area, Physics building 11:15-11:40

Sulphur is one of the most abundant elements in our galaxy and is a bio-essential for all Earth-life forms. However, its constraints in its cosmic journey from interstellar medium into the planets is not well understood. This presentation traces the evolution of sulphur in protoplanetary disks in its refractory (FeS) and volatile (H2S) forms. This is achieved by modelling its chemistry as a function of temperature (Chambers 2009) and using chemical equilibrium and disequilibrium calculations. After fine tuning parameters with Solar system observations, the model predicts the evolution of sulphur in protoplanetary disks around A and M type stars.

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