Library of high-resolution UES echelle spectra of F, G, K and M field dwarf stars ^*,**,***

¹ Departamento de Astrofísica, Facultad de Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
² Pennsylvania State University, Department of Astronomy & Astrophisics, 525 Davey Lab., University Park, PA 16802, U.S.A.
³ Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
⁴ University of California at Berkeley, Department of Astronomy, Berkeley, CA 94720, U.S.A.

Send offprint request to: D. Montes

Received: 20 June 1997
Accepted: 12 August 1997

Abstract

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  to 10600  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 Hβ, Mg i b triplet, Na i D₁, D₂, He i D₃, Hα, 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.