I imagine the relativistic version of the Doppler effect would be appropriate but I'm not entirely sure since flux is a measure of intensity. Alternatively, where could I find redshift data for exoplanets? I can only get my hands on Echelle grating spectra which is admittedly a little difficult to understand. Any help is appreciated. Thank you!

  • $\begingroup$ Question is confusing. What exactly is the data you have? The question about obtaining RV data is an entirely separate question to that in the title. $\endgroup$
    – ProfRob
    Dec 1, 2022 at 9:25


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