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On the λ Bootis spectroscopic binary hypothesis

In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no. 2
Ch. Stütz - E. Paunzen
Detaily:
Rok, strany: 2008, 459 - 460
Kľúčové slová:
stars: chemically peculiar, binaries: spectroscopic
O článku:
It is still a matter for some debate whether the group of λ Bootis stars has been homogeneously defined. A widely discussed working hypothesis postulates that two solar-abundant stars of an undetected spectroscopic binary system would mimic a single, metal-weak spectrum, thus preventing any reliable analysis of the group characteristics. Using the newest available stellar-atmosphere models and synthesis codes, we investigate whether the proposed spectroscopic-binary model can explain both the observed abundance patterns and the photometric metallicity indices, and what would be the percentage of undetected spectroscopic binary systems.
Ako citovať:
ISO 690:
Stütz, C., Paunzen, E. 2008. On the λ Bootis spectroscopic binary hypothesis. In Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no.2, pp. 459-460. 1335-1842.

APA:
Stütz, C., Paunzen, E. (2008). On the λ Bootis spectroscopic binary hypothesis. Contributions of the Astronomical Observatory Skalnaté Pleso, 38(2), 459-460. 1335-1842.