Princeton University Extrasolar Planet Discussion Group

In this talk, I will present a method to remove the effects of stellar activity from radial velocity measurements.
This method is based on a novel factorization of the measured spectra to a sum of time independent eigen-spectra convolved with small kernels.

We show that the RV measurement cleanly decouples from stellar activity, and that the kernels are a sufficient statistic for any measurable of stellar activity.

I will then open the talk for a discussion on possible applications of this for researching stellar activity, measuring the obliquity of planets and for verifying transiting planets with a few spectra, closely spaced in time, all enabled by this new factorization.