Bibcode
Casuso, Emilio; Beckman, John E.
Referencia bibliográfica
Publications of the Astronomical Society of Japan, Vol.55, No.1, pp.247-255
Fecha de publicación:
2
2003
Número de citas
3
Número de citas referidas
3
Descripción
Measurements of the 7Li/6Li ratio in the local
interstellar medium (ISM) towards o Per and ζ Per by Knauth et al.
(2000, AAA 073.131.129) show clouds with a range from near 2 (a value
which points to GCR production by spallation or alpha + alpha to near 11
(the solar system value). These values can be very well accounted for
within our model of general chemical enrichment of the Galaxy in which a
key role is played by the continuing infall of metal-poor extragalactic
gas to the Galactic plane, in the form of high-velocity clouds. Within
this model, light nuclides are produced in the ISM, but destroyed in
dense hot interstellar regions around massive stars, the process of
which yields a differential depletion of 6Li relative to
7Li, which can vary on quite short-distance scales.