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Understanding Astrophysical Noise from Stellar Surface Magneto-Convection by Cegla, H. M.; Watson, C. A.; Shelyag, S.; Mathioudakis, M. is a scholarly article available to read on EtoBox.

What is Understanding Astrophysical Noise from Stellar Surface Magneto-Convection about?

To obtain cm/s precision, stellar surface magneto-convection must be disentangled from observed radial velocities (RVs). In order to understand and remove the convective signature, we create Sun-as-a-star model observations based on a 3D magnetohydrodynamic solar simulation. From these Sun-as-a-star model observations, we find several line characteristics are correlated with the induced RV shifts. The aim of this campaign is to feed directly into future high precision RV studies, such as the search for habitable, rocky worlds, with forthcoming spectrographs such as ESPRESSO.

Author

Cegla, H. M.; Watson, C. A.; Shelyag, S.; Mathioudakis, M.

Published

2014

Language

EN