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  • Confirmation of Candidature : Candidate - Emma Brown

Confirmation of Candidature : Candidate - Emma Brown

Magnetic and Activity Cycles in Solar-type Stars and Their Impact on Exoplanet Detection

Date: 12 September 2019
Time: 4:00 PM - 6:00 PM
Venue: Toowoomba - Q303, or via Zoom
Contact: For more information, please contact the Graduate Research School.
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The cyclic regeneration of the Sun's global magnetic field occurs in phase with its chromospheric activity cycle. It is not yet clear if solar-like activity or magnetic cycles are common among solar-type stars, for which the observed magnetic activity is diverse. This project will characterise magnetic and activity cycles for solar-type stars to improve our understanding of stellar magnetism. Long-term chromospheric variability will be analysed for a large sample of mature, solar-type stars, and Zeeman Doppler Imaging will be used to examine the evolution of the large-scale magnetic field throughout activity cycles. Activity cycles can induce long-period perturbations in stellar radial velocity profiles which impact the detection of exoplanets. This work will provide constraints for exoplanet detection throughout activity cycles.