The Double-Mode Cepheid V371 Persei Redux | Zendy

E. G. Schmidt | Zendy

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The Double-Mode Cepheid V371 Persei Redux

Author(s) -

E. G. Schmidt

Publication year - 2011

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/659148

Subject(s) - cepheid variable , metallicity , physics , astrophysics , stars , astronomy , spectral line , population , demography , sociology

A metallicity of [Fe/H] = -0.05 to -0.40 was derived from four spectra of the peculiar beat Cepheid V371 Per. This conflicts with previous estimates ranging from -0.7 to -1.0 based on the period ratio. It is suggested that the discrepancy may be resolved by assuming near solar metallicity but a low mass. This is in accord with a suggestion by Sandage and Tammann that the AHB3 (or BL Her) stars are Population I analogs of short-period type II Cepheids. Further pulsational modeling is needed to clarify the status of this star and to understand the AHB3 stars.

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