[ascl:2508.019]
FiCUS: FItting the stellar Continuum of Uv Spectra
Saldana-Lopez, A.;
Schaerer, D.;
Chisholm, J.;
Calabrò, A.;
Pentericci, L.;
Cullen, F.;
Saxena, A.;
Amorín, R.;
Carnall, A. C.;
Fontanot, F.;
Fynbo, J. P. U.;
Guaita, L.;
Hathi, N. P.;
Hibon, P.;
Ji, Z.;
McLeod, D. J.;
Pompei, E.;
Zamorani, G.
FiCUS (FItting the stellar Continuum of Uv Spectra) fit the stellar continuum of extragalactic ultraviolet (UV) spectra. The code takes observed-frame wavelength, flux density (with errors) and user-defined mask arrays as inputs, and returns an estimation of the galaxy stellar age, metallicity and dust extinction, as well as other secondary Spectral Energy Distribution (SED) parameters. FiCUS has two scripts; the first reads the INPUT file provided by the user and performs the fit according to selected options. It then gives the best-fit parameters and creates the OUTPUT files and figures. The second script includes pre-defined routines for spectral analysis, loading INPUT files and handling with data and models, as well as functions for the fitting routine, SED-parameters calculations and plotting, and imports functions into the first script.