Pyaneti: a fast and powerful software suite for multi-planet radial velocity and transit fitting

Abstract

Transiting exoplanet parameter estimation from time-series photometry and Doppler spectroscopy is fundamental to study planets' internal structures and compositions. Here we present the code pyaneti, a powerful and user-friendly software suite to perform multi-planet radial velocity and transit data fitting. The code uses a Bayesian approach combined with an MCMC sampling to estimate the parameters of planetary systems. We combine the numerical efficiency of FORTRAN, the versatility of PYTHON, and the parallelization of OpenMP to make pyaneti a fast and easy to use code. The package is freely available at https://github.com/oscaribv/pyaneti.

15 pages, 6 figures, 2 tables. Accepted for publication in MNRAS

References in corpus (19)

• The Transiting Exoplanet Survey Satellite
• The K2 Mission: Characterization and Early results
• Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
• EXOFAST: A fast exoplanetary fitting suite in IDL
• Data analysis recipes: Using Markov Chain Monte Carlo
• Markov Chain Monte Carlo Methods for Bayesian Data Analysis in Astronomy
• A Study of the Shortest-Period Planets Found With Kepler
• EVEREST: Pixel Level Decorrelation of K2 Light curves
• PyTransit: Fast and Easy Exoplanet Transit Modelling in Python
• Efficient fitting of multiplanet Keplerian models to radial velocity and astrometry data
• The transiting multi-planet system HD3167: a 5.7 MEarth Super-Earth and a 8.3 MEarth mini-Neptune
• 44 Validated Planets from K2 Campaign 10
• K2-141 b: A 5-M${}_{\oplus }$ super-Earth transiting a K7 V star every 6.7 hours
• Keplerian Orbits and Dynamics of Exoplanets
• $\text{PyTranSpot}$ - A tool for multiband light curve modeling of planetary transits and stellar spots
• SPIRou: a nIR spectropolarimeter / high-precision velocimeter for the CFHT
• K2-98 b: A 32-M${}_{\oplus }$ Neptune-sized planet in a 10-day orbit transiting an F8 star
• Evidence of a Sub-Saturn around EPIC~211945201
• Models of radial velocities and transit light curves

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