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Fig. 7.


PdBI CO(4–3) line profiles of the Emerald (the main arc of PLCK_G165.7+49.0, red line in the left panel) and the two nearby sources, Co–N and Co–S (red and blue lines in the right panel), compared to the GBT CO(1–0) line profile of Harrington et al. (2018, black line in both panels). The wings in the spatially-integrated CO(1–0) line profile are not detected toward the arc, but their velocity range is well-matched with the range covered by the CO(4–3) line emission from sources Co–N and Co–S, which are blended with the arc in the GBT beam.

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