Montes Gutiérrez, DavidMartín, E. L.Fernández Figueroa, María JoséCornide Castro-Piñeiro, ManuelCastro Rubio, Elisa De2023-06-202023-06-201997-060365-013810.1051/aas:1997170https://hdl.handle.net/20.500.14352/59619© 1997 EDP Sciences. This research has made use of the SIMBAD data base, operated at CDS, Strasbourg, France. We wish to thank the staff of Calar Alto and La Palma observatories for their efficient assistance. We have made use of the La Palma ING data archive for retrieving some spectra. This work has been supported by the Universidad Complutense de Madrid and the Spanish Dirección General de Investigación Científica y Técnica (DGICYT) under grant PB94-0263.In this work we present spectroscopic observations centered in the spectral lines most widely used as optical indicators of chromospheric activity (Hα, Hβ, CaII H & K, and HeI D_3) in a sample of F, G, K and M chromospherically inactive stars. The spectra have been obtained with the aim of providing a library of high and mid-resolution spectra to be used in the application of the spectral subtraction technique to obtain the active-chromosphere contribution to these lines in chromospherically active single and binary stars. This library can also be used for spectral classification purposes. A digital version with all the spectra is available via ftp and the World Wide Web (WWW) in both ASCII and FITS formats.engjournal articlehttp://dx.doi.org/10.1051/aas:1997170http://aas.aanda.org/open access52Chromospherically active binariesDwarf flare starsSpectrophotometric atlasArchival dataCool dwarfsEmissionStandardsAngstromSystemsFE/HAstrofísicaAstronomía (Física)