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A&A Supplement series, Vol. 127, Mars II 1998, 485-495

Received June 20; accepted August 12, 1997

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

D. Montestex2html_wrap1433 - E.L. Martıntex2html_wrap1435

Send offprint request: D. Montes (

tex2html_wrap1437  Departamento de Astrofısica, Facultad de Fısicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
tex2html_wrap1439  Pennsylvania State University, Department of Astronomy & Astrophisics, 525 Davey Lab., University Park, PA 16802, U.S.A.
tex2html_wrap1441  Instituto de Astrofısica de Canarias, E-38200 La Laguna, Tenerife, Spain
tex2html_wrap1443  University of California at Berkeley, Department of Astronomy, Berkeley, CA 94720, U.S.A.


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 Htex2html_wrap_inline1411, Mg I b triplet, Na I D1, D2, He I D3, Htex2html_wrap_inline1419, 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.

keywords: Atlases -- stars: activity -- stars: chromospheres -- stars: late-type -- stars: fundamental parameters -- stars: general

Copyright by the European Southern Observatory (ESO)