Journal Article

V371 Per – A thick-disc, short-period F/1O Cepheid

P. Wils, A. A. Henden, S. Kleidis, E. G. Schmidt and D. L. Welch

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 402, issue 2, pages 1156-1160
Published in print February 2010 | ISSN: 0035-8711
Published online February 2010 | e-ISSN: 1365-2966 | DOI:
V371 Per – A thick-disc, short-period F/1O Cepheid

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V371 Per was found to be a double-mode Cepheid with a fundamental mode period of 1.738 days, the shortest among Galactic beat Cepheids, and an unusually high period ratio of 0.731, while the other Galactic beat Cepheids have period ratios between 0.697 and 0.713. The latter suggests that the star has a metallicity [Fe/H] between −1 and −0.7. The derived distance from the Galactic plane places it in the thick disc or the Halo, while all other Galactic beat Cepheids belong to the thin disc. There are indications from historical data that both the fundamental and first overtone periods have lengthened.

Keywords: stars: individual: V371 Per; Cepheids

Journal Article.  3033 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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