SIMBAD references

1994A&AS..108..433A - Astron. Astrophys., Suppl. Ser., 108, 433-440 (1994/December-1)

Chemical composition of selected double-mode Cepheids and the P1/P0 - [Fe/H] relation.

ANDRIEVSKY S.M., KOVTYUKH V.V., USENKO I.A., KLOCHKOVA V.G. and GALAZUTDINOV G.A.

Abstract (from CDS):

We present the results of the detailed spectroscopic investigation of three double-mode Cepheids: EW Sct, VX Pup and BQ Ser. The abundance analysis has shown: (1) Carbon is deficient (the abundance normalized to the iron content with respect to the solar value). (2) This carbon deficiency is accompanied by nitrogen overabundance and normal oxygen content. (3) α - and iron group elements with little exception show solar ratio [M/Fe]. (4) The heavy elements in EW Sct are underabundant. (5) Normal iron abundance for EW Sct ([Fe/H]=-0.08) and metal deficiency for VX Pup ([Fe/H]=-0.39) and BQ Ser ([Fe/H]=-0.36) strongly support the existence of a P1/P0-metallicity relation, as first discussed in work of Andrievsky et al. (1993).

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: variables: Cepheids - stars: individual: EW Sct, VX Pup, BQ Ser

Simbad objects: 14

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