Intervening Ni II absorption at z ≈ 2.06 towards the quasar FBQS J0812+3208 spectrum (black curves) and simultaneous fit to the main six transitions (red curves), using our f-values. Blueward of Ni IIλ1317, there is a Lyα absorption at z = 2.32260. At vhelio = 0 km s−1, the redshift is z = 2.06683.
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