Evolutionary spectrum inversion and analysis (Especia)
Description
The Evolutionary spectrum inversion and analysis (Especia) file set provides ISO C++ code for the inverse modelling and analysis of intergalactic and interstellar absorption line regions seen in QSO spectra.
Due to the use of evolution strategies with covariance matrix adaption, the inverse modelling procedure is highly competitive and capable of calculating the optimal spectral decomposition without requiring any particular initialisation.
Additional highlights are the joint modelling and optimisation of the background continuum, and an accurate semi-analytic convolution of the absorption term with the instrumental function. The method is explained in detail by Quast et al. (2005).
Notes
This research was funded by the Verbundforschung of the BMBF/DLR under Grant No. 50 OR9911 1 and by the DFG under Re 353/48. Data included with this software are based on observations made with ESO Telescopes at the La Silla or Paranal Observatories under programme ID 066.A-0212.
Files
especia-2024.2.zip
Files
(11.6 MB)
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md5:231661c26534b91ebcfce54dad82c970
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Additional details
Software
- Repository URL
- https://github.com/octoflar/especia
- Programming language
- C++
- Development Status
- Active
References
- Quast, Ralf; Baade, Robert; Reimers, Dieter (2005). Evolution strategies applied to the problem of line profile decomposition in QSO spectra. Astronomy and Astrophysics 431 (3) 1167. DOI 10.1051/0004-6361:20041601.