Re: p, number of fitted parameters

Posted by karenacollins on Dec 25, 2024; 7:48am
URL: http://astroimagej.170.s1.nabble.com/p-number-of-fitted-parameters-tp2612p2613.html

If all transit model parameters are enabled for fitting and no detrending is enabled, the number of fitted parameters is 7 (the ones you list plus baseline flux). For every transit model parameter that is fixed/locked, subtract 1. For every detrend parameter included, add 1. Chi2 is used as part of the NelderMeade method (sometimes referred to as downhill simplex or Amoeba) to select the "best fit" transit model. We do not current implement MCMC fitting.

Karen