Published February 26, 2021 | Version 1.5
Poster Open

A tale of two stellar characterisation codes: StePar and SteParSyn

  • 1. Centro de Astrobiología
  • 2. Universidad Complutense de Madrid
  • 3. Instituto de Astrofísica de Canarias


We report on two state-of-the-art codes designed to characterise the spectra of late-type stars. STEPAR is a Python 3.X code that implements the EW method to calculate stellar atmospheric parameters (Teff, log(g), and [Fe/H]) of FGK stars. This code has already been extensively used to analyse high-resolution stellar spectra of thousands of Gaia-ESO Survey  stars, among others. On the other hand, STEPARSYN is a Bayesian code designed to retrieve the distribution of stellar parameters of an observed spectrum using the spectral synthesis method combined with a robust scheme that rests on a Markov Chain Monte Carlo sampler.



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