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A1689-zD1 is one of the most distant galaxies, discovered with the aid ofgravitational lensing, providing us with an important opportunity to studygalaxy formation in the very early Universe. In this study, we report thedetection of [C II]158$\mu$m and [O III]88$\mu$m emission lines of A1689-zD1 inthe ALMA Bands 6 and 8. We measure the redshift of this galaxy as$z_{\rm{sys}}=7.133\pm0.005$ based on the [C II] and [O III] emission lines,consistent with that adopted by Bakx et al. (2021). The observed$L_{[\rm{O\,III]}}/L_{[\rm{C\,II]}}$ ratio is $2.09\pm0.09$, higher than mostof the local galaxies, but consistent with other $z\sim7$ galaxies. Themoderate-spatial resolution of ALMA data provided us with a preciousopportunity to investigate spatial variation of$L_{[\rm{O\,III]}}/L_{[\rm{C\,II]}}$. In contrast to the average value of 2.09,we find a much higher $L_{[\rm{O\,III]}}/L_{[\rm{C\,II]}}$ of $\sim 7$ at thecenter of the galaxy. This spatial variation of$L_{[\rm{O\,III]}}/L_{[\rm{C\,II]}}$ was seldom reported for other high-zgalaxies. It is also interesting that the peak of the ratio does not overlapwith optical peaks. Possible physical reasons include a central AGN, shockheating from merging, and starburst. Our moderate-spatial resolution data alsoreveals that in addition to the observed two clumps shown in previous HSTimages, there is a redshifted segment to the west of the northern opticalclump. Such a structure is consistent with previous claims that A1689-zD1 is amerging galaxy, but with the northern redshifted part being some ejectedmaterials, or that the northern redshifted materials being from a third morehighly obscured region of the galaxy.

ALMA [O III] and [C II] Detections of A1689-zD1 at $z=7.13$