Astrophysics Source Code Library

Making codes discoverable since 1999

Searching for codes credited to 'Bouchard, Antoine'

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[ascl:1104.007] ULySS: A Full Spectrum Fitting Package

ULySS (University of Lyon Spectroscopic Analysis Software) is an open-source software package written in the GDL/IDL language to analyze astronomical data. ULySS fits a spectrum with a linear combination of non-linear components convolved with a line-of-sight velocity distribution (LOSVD) and multiplied by a polynomial continuum. ULySS is used to study stellar populations of galaxies and star clusters and atmospheric parameters of stars.