Other
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasp..110..433w&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 110, Issue 746, pp. 433-450.
Other
7
Cepheids, Stars: Oscillations, Stars: Variables: Other
Scientific paper
This is the third in a series of papers on large-amplitude delta Scuti and related stars intended to determine Baade-Wesselink radii and luminosities with precision. The first two papers discussed our method of analysis and its application to the delta Scuti variables EH Librae and DY Herculis; in the present paper we discuss the observations and analysis of the SX Phoenicis variable DY Pegasi. Optical (BVI) and infrared (JH) photometry and cross-correlated radial velocity data have been obtained and analyzed. Fourier representations for the BVIH light curves and for the radial velocity curve were used to derive a value for the minimum radius for each of 22 combinations of flux and color index, from which we obtain a mean value for the minimum radius of R_min=2.09+/-0.25 R_solar. When combined with effective temperatures from Burki & Meylan, we find a mean bolometric luminosity of
Fry David J. I.
Milone Eugene F.
van Leeuwen Joeri
Wilson J. F. W.
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