THE ASTRONOMICAL JOURNAL     VOLUME 106, NUMBER 6, PAGE 2493      DECEMBER 1993

	     A PHOTOMETRIC AND SPECTROGRAPHIC STUDY OF SX PHOENICIS

                                  CHULHEE KIM

   Department of Earth Science Education, Chonbuk National University, Korea
                 Electronic mail: kimastro@garam.kreonet.re.kr

                      D. H. McNAMARA AND C. G. CHRISTENSEN

	 Department of Physics and Astronomy, Brigham Young University,
			       Provo, Utah 84602
		      Electronic Mail: pasp@astro.byu.edu

                                   ABSTRACT

    Simultaneous photometric (uvbyBeta) and spectrographic observations of
    SX Phe are described.  Analysis of the light and velocity frequency
    spectra are performed.  It is shown that all frequencies detected are
    harmonics or combinations of the fundamental and first harmonic
    frequencies.  Intrinsic (b-y) and c1 values used in conjunction with a
    model-atmosphere grid appropriate for a star with [M/H] = -1.0 yields
    <Teff> = 7360 K and <log g> = 3.90.  Standard evolutionary models
    indicate the mass is 1.13 Msun and <Mv> value is +2.9.  The radial-
    velocity data indicate a mean radial velocity of -37 km/s and a
    total range of 38 km/s.