A photometric and spectrographic study of SX Phoenicis

Details A photometric and spectrographic study of SX Phoenicis A photometric and spectrographic study of SX Phoenicis

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106.2493k&link_type=abstract

The Astronomical Journal (ISSN 0004-6256), vol. 106, no. 6, p. 2493-2501

Astronomy and Astrophysics

Astronomy

12

Astronomical Photometry, Astronomical Spectroscopy, Spectrum Analysis, Stellar Spectra, Variable Stars, Harmonics, Stellar Atmospheres, Stellar Evolution, Stellar Luminosity, Stellar Mass, Velocity

Scientific paper

Simultaneous photometric 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 the mean value of (Teff) = 7630 K and the mean value of (log g) = 3.90. Standard evolutionary models indicate the mass is 1.13 solar mass and the mean value of (Mupsilon) 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.

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