Open Access

Fig. A.8.


J1237+0647: In this spectrum Na I D is clearly detected while Ca II H& K are strongly blended with telluric absorptions, so there is no EW upper limit for Ca II D. Detection of H2 and CO in this system has been published by Noterdaeme et al. (2010a). The excitation of the CO rotational levels is used to measure TCMB. The spectrum used by Noterdaeme et al. (2010a) was obtained with UVES and the authors derive log N(HI) = 20.0 ± 0.15, to be compared with our measurement 19.89 ± 0.47. The system is also analysed by Daprà et al. (2016). Three components are used to fit the absorptions from C I and its fine structure lines. The components of Fe II and C I are in exactly the same place.

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