SIMBAD references

1998A&A...333L..35A - Astronomy and Astrophysics, volume 333, L35-38 (1998/5-2)

The possible effects of an unusual resonance in very long period Cepheids.


Abstract (from CDS):

The shape of the radial velocity and light curves of 24 long-period (30≤P≤134d) Cepheids in the Magellanic Clouds shows a progression with the period. The sequences of the radial velocity and light curves are based only on a small sample of stars; however, evident changes of the shape can be seen in Cepheids with period between 90 and 134d. The Fourier parameter-period diagrams for the radial velocity curves show trends which remind in part those of Cepheids with period near 10d. The plausible interpretation is a resonance, probably P0/P1=2 between the fundamental and the first overtone mode. The possible importance of this phenomenon for the study of stellar structure and evolution in relatively far galaxies is emphasized .

Abstract Copyright:

Journal keyword(s): stars: oscillations - Cepheids - Magellanic Clouds

VizieR on-line data: <Available at CDS (J/A+A/333/L35): table1.dat table2.dat table3.dat tables.tex>

Simbad objects: 29

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