Volume 398, Number 2, February I 2003
|Page(s)||697 - 704|
|Published online||21 January 2003|
The spectrum of the SB2 HD 64491 and the problem of metal abundances in λ Boo stars*
Dipartimento di Astronomia, Università degli Studi di Trieste, Via G.B.Tiepolo 11, 34131 Trieste, Italy e-mail: firstname.lastname@example.org
2 Institut d'Astrophysique, 98bis Bld Arago, 75014 Paris, France e-mail: email@example.com
3 Université de Paris Sud XI
Corresponding author: R. Faraggiana, firstname.lastname@example.org
Accepted: 10 October 2002
The spectrum of the classical λ Boo star HD 64491 reveals that the object is a double-lined spectroscopic binary whose components have different values. From such a tangled spectrum, we show that large metal underabundances can be derived with the hypothesis that the spectrum is formed by a single object, while the abundance peculiarities are drastically reduced when the duplicity is taken into account.
Key words: stars: atmospheres / stars: binaries: spectroscopic / stars: chemically peculiar
© ESO, 2003
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