Library of high and mid-resolution spectra in the CaII H & K, Halpha, Hbeta, NaI D1, D2, and HeI D3 line regions of F, G, K and M field stars
Abstract
In this work we present spectroscopic observations centered in the spectral lines most widely used as optical indicators of chromospheric activity (Halpha, Hbeta, Ca II H & K, and He I D3) 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
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