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Fig. 4.
Observed CO intensities of the main and HPVW components toward Sgr A* translated to rotational population diagrams. The green curve shows the best isothermal non-LTE model. The red and blue dashed curves show predictions of PDR models with G0 = 104.9 and ζCR = 10−15 s−1 (line intensities multiplied by 0.04).
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