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Fig. 1.


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CO(2–1) spectra and 0th moment maps for the detected QSOs. The black solid line indicates the best fit Gaussian model, and the reference velocity was determined based on the redshift derived from the Gaussian fit (LSRK frame). Contours in the 0th moment maps start at 4σ and increase in steps of 4σ for J1524+2209, J1330+1810, J0924+0219, and J1650+4251; contours for J1455+1447, J1633+3134, and J0806+2006 start at 2σ and increase in steps of 2σ. We have used the AIC criterion to determine whether a single- or double–Gaussian fit is more appropriate for the profiles.

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