Classical Cepheid light curves revisited

Journal Article · Fri Nov 01 04:00:00 EST 1985 · Publ. Astron. Soc. Pac.; (United States)

DOI:https://doi.org/10.1086/131666· OSTI ID:5574259

Simon, N R; Moffett, T J

Fourier decompositions are made of the B, V, R, and I classical Cepheid observations of Moffett and Barnes (1980). The Fourier diagrams for V agree very well with the corresponding plots of Simon and Lee (1981). The B, R, and I diagrams resemble the plots for V, but with small, systematic shifts in the phases phi(21) and phi(31). The 2.5-day star, DT Cyg, is confirmed as a likely overtone pulsator by its anomalous position in the Fourier plots. Finally, the Fourier phase quantity phi(41) is studied, and phase-phase diagrams are introduced in order to examine the Hertzsprung progression. Discontinuities in these diagrams support the idea that the long-period and short-period Cepheids may reach their limit cycles in different ways. 21 references.

• Research Organization: Nebraska Univ., Lincoln; Purdue Univ., West Lafayette, IN
• OSTI ID: 5574259
• Journal Information: Publ. Astron. Soc. Pac.; (United States), Journal Name: Publ. Astron. Soc. Pac.; (United States) Vol. 97; ISSN PASPA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
BRIGHTNESS
CEPHEIDS
DATA
DIAGRAMS
FOURIER ANALYSIS
INFORMATION
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PULSATING VARIABLE STARS
STARS
THEORETICAL DATA
VARIABLE STARS