Fig. 7
Ca ii absorption spectra in the direction of the quasars QSO B2225−404 and QSO J2155−0922. The upper panels show the corresponding H i spectra that were spectrally binned to improve the signal-to-noise ratio. Note that Milky Way emission was clipped. In both cases no H i detection was made. The dashed vertical lines mark the LSR velocities of the absorbers.
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