CUPANI, GuidoGuidoCUPANID'ODORICO, ValentinaValentinaD'ODORICOCRISTIANI, StefanoStefanoCRISTIANIGonzález-Hernández, Jonay I.Jonay I.González-HernándezLovis, ChristopheChristopheLovisSousa, SérgioSérgioSousaDI MARCANTONIO, PaoloPaoloDI MARCANTONIOMégevand, DenisDenisMégevand2021-03-012021-03-012019978-1-58381-929-61050-3390http://hdl.handle.net/20.500.12386/30669The data analysis software (DAS) for VLT ESPRESSO is aimed to set a new benchmark in the treatment of spectroscopic data towards the extremely-large-telescope era, providing carefully designed, fully interactive recipes to take care of complex analysis operations (e.g. radial velocity estimation in stellar spectra, interpretation of the absorption features in quasar spectra). A few months away from the instrument's first light, the DAS is now mature for science validation, with most algorithms already implemented and operational. In this paper, I will showcase the DAS features which are currently employed on high-resolution HARPS and UVES spectra to assess the scientific reliability of the recipes and their range of application. I will give a glimpse on the science that will be possible when ESPRESSO data become available, with a particular focus on the novel approach that has been adopted to simultaneously fit the emission continuum and the absorption lines in the Lyman-alpha forest of quasar spectra.STAMPAenConference paperhttp://arxiv.org/abs/1808.04249v1https://myasp.astrosociety.org/product/CS521/vol-521-astronomical-data-analysis-software-and-systems-xxvi2019ASPC..521..362CFIS/05 - ASTRONOMIA E ASTROFISICA