THE ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 95:163-299, 1994 November

                   AN ATLAS OF ULTRAVIOLET P CYGNI PROFILES

                               THEODORE P. SNOW
         Center for Astrophysics and Space Astronomy, Campus Box 389,
     University of Colorado, Boulder, CO 80309. I: tsnow@casa.colorado.edu

                           HENNY J. G. L. M. LAMERS
        Astronomical Institute and SRON Laboratory for Space Research,
    University of Utrecht, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
                             I: hennyl@sron.ruu.nl

                              DOUGLAS M. LINDHOLM
         Center for Astrophysics and Space Astronomy, Campus Box 389,
   University of Colorado, Boulder, CO 80309. I: lindholm@casa.colorado.edu

                                      AND

                                ANDREW P. ODELL
       Department of Physics and Astronomy, Northern Arizona University,
     P.O. Box 6010, Flagstaff, AZ 86011-6010. I: odell@nauvax.ucc.nau.edu

                                   ABSTRACT
 
        We have selected spectra of 232 stars from the IUE archives for
     inclusion in an atlas intended for various uses but tailored
     especially for the study of stellar winds.  The atlas covers the range
     in spectral types from O3 to F8.  The full atlas covers the reduced
     and normalized high resolution spectra from the IUE long- and short-
     wavelength spectrographs.
        Here we discuss the selection of the stars and the data reduction,
     and we present in velocity units the profiles of lines formed in the
     stellar winds.  The selected lines cover a wide range of ionizations,
     allowing a comparison of the profiles from different ions in the wind
     of each star and a comparison of the different wind lines as a
     function of spectral type and luminosity.  We also present the basic
     data on the program stars to facilitate study of the dependence of
     wind features on stellar parameters such as luminosity, temperature,
     escape velocity, and v sin i.  We provide an overview of the
     characteristic behavior of the wind lines in the H-R diagram.
        The complete spectra are available in digital form through the NASA
     Astrophysics Data System (ADS).  We offer a description of the
     electronic database that is available through the ADS and guidelines
     for obtaining access to that database.

     Subject headings: atlases -- line: profiles -- stars: early-type --
                       ultraviolet: stars