Absolute and relative amplitudes of variations in radius of classical cepheids

@article{Tsvetkov1988AbsoluteAR,
  title={Absolute and relative amplitudes of variations in radius of classical cepheids},
  author={Ts. G. Tsvetkov},
  journal={Astrophysics and Space Science},
  year={1988},
  volume={150},
  pages={223-234}
}
  • T. Tsvetkov
  • Published 1 December 1988
  • Physics
  • Astrophysics and Space Science
On the basis of observational data for the absolute ΔR and relative ΔR/R amplitudes of variations in radius of galactic classical cepheids (55 stars from Balona and Stobie (1979) and 30 stars from Sollazzoet al. (1981)), four kinds of empirical linear relations are obtained: log(P ΔV)−logΔR, logP−logΔR, log(P ΔV)−log(ΔR/R), and logP−log(ΔR/R);P, R, and ΔV are the pulsation periods, the mean stellar radii, and the amplitudes of light variations, respectively. Three groups of stars are considered… 
GCIRS 7, a pulsating M1 supergiant at the Galactic centre - Physical properties and age
Context. The stellar population in the central parsec of the Galaxy is dominated in mass and number by an old (several Gyr) population, but young (6 2 Myr), massive stars dominate the luminosity

References

SHOWING 1-10 OF 16 REFERENCES
The amplitudes of the variations in radius of classical cepheids
On the basis of simultaneous accurate observations of fifteen classical cepheids with 3<P (days)<7 (Gieren, 1981a, b, 1982b), the linear relation between log (PΔV) and logδR Fernie, 1965; Nikolov and
A study of pulsation in RR Lyrae models.
Non-linear calculations of intermediate amplitude to investigate stability have been carried out for one hundred RR Lyrae models of varying composition, mass, luminosity, and effective temperature.
The Feinheit method: A phase-independent formulation of the period-luminosity relation for Cephids
The tight correlation between color and luminosity during the cyclical variation of a Cepheid is calibrated and shown to be a direct means by which most of the phase-dependent temperature-induced
On the pulsation amplitude of cepheid variables
On the basis of more abundant data a relation logPΔV/logΔR for cepheid variables (Fernie, 1965) is constructed. A linear relation between logP ΔV and logΔR for classical cepheids is found, which
...
...