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Wednesday 27 Apr 2022Convective Blueshift of F, G, and K stars

Shweta Dalal -

4th Floor physics + remote 14:00-15:00

The radial velocity (RV) signal of a star is a combination of doppler motion due to the presence of an orbiting planet(s) and many stellar features such as spots, plages, and other phenomena that can either hide a planet or mimic one. To improve our ability to detect earth-like planets around solar type stars (such as in the future Terra Hunting Experiment), we need to better understand these stellar activity signals. In this talk, I will present our efforts to derive a stellar model that can be used to predict the convective blueshift for F, G and K stars. I will also discuss and compare this model with observations and simulations.

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