A&A Supplement series, Vol. 123, June II 1997, 473-485
Received June 17; accepted September 25, 1996
D. Montes - E.L. Martín - M.J. Fernández-Figueroa - M. Cornide - E. De Castro
Send offprint request: D. Montes (email@example.com)
Departamento de Astrofísica, Facultad de Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
In this work we present spectroscopic observations centered in the spectral lines most widely used as optical indicators of chromospheric activity (, , Ca II H & K, and He I ) 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.
keywords: atlas -- stars: activity -- stars: late-type -- stars: fundamental parameters -- stars: general