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The galactic double-mode Cepheids II. Properties of the generalized phase differences | | Ennio Poretti
; Ilaria Pardo
; | | Date: |
5 Dec 1996 | | Subject: | astro-ph | | Affiliation: | Osservatorio Astronomico di Brera, Merate, Italy | | Abstract: | By considering the least-squares fits of the double-mode Cepheid light curves discussed in Paper I we defined their properties by their Fourier parameters and generalized phase differences $G_{i,j}$. When plotting the latter quantities as a function of the respective order, the second order terms are confined in the region just below 3/2$pi$; the third order terms have $pi/2 < G_{i,j} < pi$, the fourth order ones cluster around 2$pi$ (or 0), the fifth order ones seem to have $pi < G_{i,j} < 3/2 pi$. The mean $G_{i,j}$ values are also regularly spaced. The progression of the $G_{i,j}$ values as a function of the period was investigated and the signature of a possible resonance near 6.0 d was found. | | Source: | arXiv, astro-ph/9612057 | | Services: | Forum | Review | PDF | Favorites | |
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