Analytic approximations for transit light curve observables, uncertainties, and covariances
Author(s)Carter, Joshua Adam; Yee, Jennifer C.; Eastman, Jason; Gaudi, B. Scott; Winn, Joshua Nathan
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The light curve of an exoplanetary transit can be used to estimate the planetary radius and other parameters of interest. Because accurate parameter estimation is a non-analytic and computationally intensive problem, it is often useful to have analytic approximations for the parameters as well as their uncertainties and covariances. Here we give such formulas, for the case of an exoplanet transiting a star with a uniform brightness distribution. When limb darkening is significant, our parameter sets are still useful, although our analytic formulas underpredict the covariances and uncertainties.
DepartmentKavli Institute for Astrophysics and Space Research; Massachusetts Institute of Technology. Department of Physics
Proceedings of the International Astronomical Union
Cambridge University Press
Carter, Joshua A. et al. “Analytic approximations for transit light curve observables and uncertainties.” Proceedings of the International Astronomical Union 4.Symposium S253 (2008): 392-393.
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