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- W4313554872 endingPage "A171" @default.
- W4313554872 startingPage "A171" @default.
- W4313554872 abstract "Context. The characterization of exoplanets requires the reliable determination of the fundamental parameters of their host stars. Spectral fitting plays an important role in this process. For the majority of stellar parameters, matching synthetic spectra to the observations provides a robust and unique solution for the fundamental parameters, such as effective temperature, surface gravity, abundances, radial and rotational velocities, among others. Aims. Here, we present a new software package for fitting high-resolution stellar spectra that is easy to use, available for common platforms, and free from commercial licenses. We call it PySME. It is based on the proven Spectroscopy Made Easy package, later referred to as IDL SME or “original” SME. Methods. The IDL (Interactive Data Language) part of the original SME code has been rewritten in Python, but we kept the efficient C++ and FORTRAN code responsible for molecular-ionization equilibrium, opacities, and spectral synthesis. In the process we updated some components of the optimization procedure to offer more flexibility and better analysis of the convergence. The result is a more modern package with the same functionality as the original SME. Results. We applied PySME to a few stars of different spectral types and compared the derived fundamental parameters with the results from IDL SME and other techniques. We show that PySME works at least as well as the original SME." @default.
- W4313554872 created "2023-01-06" @default.
- W4313554872 creator A5008688551 @default.
- W4313554872 creator A5011212253 @default.
- W4313554872 creator A5081004814 @default.
- W4313554872 date "2023-03-01" @default.
- W4313554872 modified "2023-10-18" @default.
- W4313554872 title "PySME" @default.
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