On the Theoretical Period-Radius Relation of Classical Cepheids | Zendy

G. Bono | Zendy; Filippina Caputo | Zendy; M. Marconi | Zendy

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On the Theoretical Period-Radius Relation of Classical Cepheids

Author(s) -

G. Bono,

Filippina Caputo,

M. Marconi

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/311270

Subject(s) - cepheid variable , physics , radius , astrophysics , amplitude , range (aeronautics) , period (music) , astronomy , stars , optics , materials science , composite material , computer security , computer science , acoustics

We present the results of a comprehensive theoretical investigation on thePeriod-Radius (PR) relation of classical Cepheids based on new sequences offull amplitude, nonlinear convective models constructed by adopting a widerange of both stellar masses and chemical compositions. For log P in the range0.9 - 1.8 a very good agreement is found between theoretical predictions andcurrent available data whereas outside this range, both at shorter and atlonger periods, nonlinear radii attain intermediate values between empiricalrelations based on different Baade-Wesselink (BW) methods and photometricbandpasses.

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