Abstract
Hazard et al.1 have described the circumstances leading to the identification of a quasi-stellar object (QSO) (1208 + 1011) with z = 3.82 ± 0.04. Here we present a moderate-resolution optical spectrum of this object. Its precise redshift, z = 3.803 ± 0.005, is the highest ever recorded.
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Sargent, W., Filippenko, A., Steidel, C. et al. Spectrum of a QSO with redshift 3.8. Nature 322, 40–42 (1986). https://doi.org/10.1038/322040a0
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DOI: https://doi.org/10.1038/322040a0
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