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Nonlinear Convective Pulsation Models of Second Overtone SMC Cepheids

Published online by Cambridge University Press:  12 April 2016

M. Marconi ,
G. Bono  and
F. Caputo
M. Marconi
Affiliation:
Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy, e-mail:[email protected]
G. Bono
Affiliation:
Osservatorio Astronomico di Roma, Via Frascati 33, 00040 Monte Porzio Catone, Italy
F. Caputo
Affiliation:
Osservatorio Astronomico di Roma, Via Frascati 33, 00040 Monte Porzio Catone, Italy

Abstract

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Nonlinear convective pulsation models representative of SMC Cepheids pulsating in the second overtone mode are presented. Model predictions are compared with observations and implications are derived for second overtone selection criteria. The role of overtone Cepheids as distance indicators is finally investigated and the derived distance scale is at odds with the so called short distance scale.

Type
Part 3. Nonlinear Effects in Pulsating Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 420 - 423
Copyright
Copyright © Astronomical Society of the Pacific 2002

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