Issue |
A&A
Volume 436, Number 2, June III 2005
|
|
---|---|---|
Page(s) | 697 - 700 | |
Section | Stellar atmospheres | |
DOI | https://doi.org/10.1051/0004-6361:20042109 | |
Published online | 30 May 2005 |
Research Note
C, N, O in
Boo stars and in composite spectra
1
Dipartimento di Astronomia, Università degli Studi di Trieste, via G. B. Tiepolo 11, 34131 Trieste, Italy e-mail: faraggiana@ts.astro.it
2
Istituto Nazionale per l'Astrofisica – Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, 34131 Trieste, Italy
Received:
2
October
2004
Accepted:
14
March
2005
The selective abundance of C, N, O (almost solar) with respect to that of other elements (underabundant) in λ Boo stars has been interpreted as a characteristic peculiarity of these objects, when considered as single stars. We show here that a similar selective abundance is predicted from the composite spectra resulting from two unresolved stars in the same temperature range as the λ Boo stars.
Key words: stars: atmospheres / stars: chemically peculiar / stars: binaries: spectroscopic
© ESO, 2005
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