SIMBAD references

We have determined the isotopic abundance ratio of ⁷Li/⁶Li in the interstellar media (ISMs) along lines of sight to HD169454 and HD250290 using the High-Dispersion Spectrograph on the Subaru Telescope. We also observed ζ Oph for comparison with previous data. The observed abundance ratios were ⁷Li/⁶Li = 8.1^+3.6_–1.8 and 6.3^+3.0_–1.7for HD169454 and HD250290, respectively. These values are in reasonable agreement with those observed previously in the solar neighborhood ISMs within ±2σ error bars and are also consistent with our measurement of ⁷Li/⁶Li = 7.1^+2.9 _–1.6 for a cloud along the line of sight to ζ Oph. This is good evidence for homogeneous mixing and instantaneous recycling of the gas component in the Galactic disk. We also discuss several source compositions of ⁷Li, Galactic cosmic-ray interactions, stellar nucleosynthesis, and big bang nucleosynthesis.