Nii: a Bayesian orbit retrieval code applied to differential astrometry
Sheng Jin,
Xiaojian Ding,
Su Wang
et al.
Abstract:Here we present an open source Python-based Bayesian orbit retrieval code (Nii) that implements an automatic parallel tempering Markov chain Monte Carlo (APT-MCMC) strategy. Nii provides a module to simulate the observations of a space-based astrometry mission in the search for exoplanets, a signal extraction process for differential astrometric measurements using multiple reference stars, and an orbital parameter retrieval framework using APT-MCMC. We further verify the orbit retrieval ability of the code thr… Show more
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