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- W2069771305 abstract "view Abstract Citations (19) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the period change of the cepheid SV Vulpeculae. Fernie, J. D. Abstract UBVRI photometry and a small number of concurrent radial velocities are given for the 45-day classical Cepheid, SV Vulpeculae. Reinvestigation of the star's period, previously considered to be erratic, shows in fact that the period is smoothly decreasing with time at a rate of 254 + or - 10 s per year. This is interpreted as being due to evolution on the H-R diagram, and a comparison is made between the period rate derived from theoretical models and observation. Good agreement is found. It is pointed out, however, that this good agreement is fortuitous, and that models with differing metallicity, l/H, etc., might give different predictions of the period rate. But, by the same token, the observed period rate offers a new hold on such theoretical parameters, and it is suggested that searches for similar period changes in other long-period Cepheids might be productive for stellar-evolution theory. Publication: The Astrophysical Journal Pub Date: August 1979 DOI: 10.1086/157248 Bibcode: 1979ApJ...231..841F Keywords: Cepheid Variables; Infrared Astronomy; Periodic Variations; Stellar Spectrophotometry; Ubv Spectra; Graphs (Charts); Light Curve; Radial Velocity; Stellar Evolution; Stellar Radiation; Visual Photometry; Astrophysics; Cepheids:Light Curves; Cepheids:Period Changes full text sources ADS | data products SIMBAD (2)" @default.
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- W2069771305 date "1979-08-01" @default.
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- W2069771305 title "On the period change of the Cepheid SV Vulpeculae" @default.
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