Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-08-31
Astronomy and Astrophysics
Astrophysics
Latex file with 5 figures using l-aa.sty and psfig.sty. Full postscript (text and figures) available at http://www.ucm.es/OT
Scientific paper
10.1051/aas:1998159
We present a library of Utrecht echelle spectrograph (UES) observations of a sample of F, G, K and M field dwarf stars covering the spectral range from 4800 AA to 10600 AA with a resolution of 55000. These spectra include some of the spectral lines most widely used as optical and near-infrared indicators of chromospheric activity such as H_beta, Mg I b triplet, Na I D_1, D_2, He I D_3, H_alpha, and Ca II IRT lines, as well as a large number of photospheric lines which can also be affected by chromospheric activity. The spectra have been compiled with the aim of providing a set of standards observed at high-resolution 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.
Martin Eduardo L.
Montes David
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