The Double-Mode Cepheid V371 Persei Redux

Details The Double-Mode Cepheid V371 Persei Redux The Double-Mode Cepheid V371 Persei Redux

Apr 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011pasp..123..381s&link_type=abstract

Publications of the Astronomical Society of the Pacific, Volume 123, issue 902, pp.381-383

Astronomy and Astrophysics

Astronomy

Supernovae

Scientific paper

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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