Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...385..793a&link_type=abstract
Astronomy and Astrophysics, v.385, p.793-801 (2002)
Astronomy and Astrophysics
Astrophysics
1
Stars: Oscillations, Stars: Variables: Cepheids, Galaxies: Magellanic Clouds
Scientific paper
The analysis of CCD observations of ten new suspected second overtone mode Cepheids in the SMC does not confirm the nature of such stars; most of them appear to be first overtone mode Cepheids. A careful analysis of the OGLE best second overtone mode candidates and of the second overtone component of double mode Cepheids in SMC and LMC has been performed in order to clarify the possible effects of a resonance between pulsation modes. There are some indications that such a resonance is indeed operating in these pulsators. A brief discussion of the effects of blending on the light curve shape is also reported, and the usefulness of the Fourier parameters as mode discriminators is discussed. Based in part on observations collected at ESO-La Silla.
Antonello Elio
Fugazza Dino
Mantegazza Luciano
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