| Issue |
A&A
Volume 398, Number 2, February I 2003
|
|
|---|---|---|
| Page(s) | 697 - 704 | |
| Section | Stellar atmospheres | |
| DOI | https://doi.org/10.1051/0004-6361:20021546 | |
| Published online | 21 January 2003 | |
The spectrum of the SB2 HD 64491 and the problem of metal abundances in λ Boo stars*
1
Dipartimento di Astronomia, Università degli Studi di Trieste, Via G.B.Tiepolo 11, 34131 Trieste, Italy e-mail: faraggiana@ts.astro.it
2
Institut d'Astrophysique, 98bis Bld Arago, 75014 Paris, France e-mail: gerbaldi@iap.fr
3
Université de Paris Sud XI
Corresponding author: R. Faraggiana, faraggiana@ts.astro.it
Received:
10
July
2002
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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