Bibcode
Molaro, P.; Beckman, J. E.; Castelli, F.
Referencia bibliográfica
In ESA Fourth European IUE Conf. p 197-201 (SEE N84-35135 24-88)
Fecha de publicación:
7
1984
Número de citas
8
Número de citas referidas
6
Descripción
An IUE archive spectrum of HD 140283 has been analyzed in the region of
the 3131 Å 9Be II resonance doublet. Close comparison
of the observed and synthetic spectra yields no measurable Be, and a
conservative upper limit of 3×10-12 for 9Be,
which is one fourth solar, can be set. With this star, and with a
previous population II star HD 76932 detailed arguments rule out
significant 9Be depletion. The authors can use these
[9Be] limits to set upper limits to the fraction of
non-primordial 7Li. The results support Spite and Spite's
conclusion that most, (if not all) of their observed 7Li is
primordial and tend to validate the utility of their [7Li]
numbers in deriving the universal baryon/photon ratio using standard Big
Bang model.