SIMBAD references

1997A&A...324..133P - Astronomy and Astrophysics, volume 324, 133-136 (1997/8-1)

The galactic double-mode Cepheids. II. Properties of the generalized phase differences.

PORETTI E. and PARDO I.

Abstract (from CDS):

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 Gi,j. When plotting the latter quantities as a function of the order, the second order terms are confined in the region just below 3π/2; the third order terms have π/2<Gi,j<π, the fourth order ones cluster around 2π (or 0), the fifth order ones seem to have π<Gi,j<3π/2. The mean Gi,j values are also regularly spaced. The progression of the Gi,j values as function of period was investigated and the signature of a possible resonance near 6.0d was found.

Abstract Copyright:

Journal keyword(s): methods: data analysis - stars: oscillations - Cepheids - Galaxy: stellar content

Simbad objects: 14

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