| Issue |
A&A
Volume 433, Number 3, April III 2005
|
|
|---|---|---|
| Page(s) | 1031 - 1035 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20040397 | |
| Published online | 29 March 2005 | |
Metallicity of mono- and multiperiodic 
Cephei stars
Astronomical Institute of Wrocław University, ul. Kopernika 11, 51-622 Wrocław, Poland e-mail: daszynska@astro.uni.wroc.pl
Received:
5
March
2004
Accepted:
2
December
2004
Analyzing IUE ultraviolet spectra of β Cep pulsating stars we noticed that multiperiodic variables have a larger mean metal abundance in the photosphere, [ m/H] , than monoperiodic ones. We apply statistical tests to verify this dichotomy. We obtain that, with a large probability, the multiperiodic β Cep stars have greater values of [ m/H] . This result is consistent with the linear non-adiabatic theory of pulsation of early B-type stars.
Key words: stars: abundances / stars: variables: general / methods: statistical
© ESO, 2005
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