Updated Measurements of [O iii] 88 m, [C ii] 158 m, and Dust Continuum Emission from a z=7.2 Galaxy

We present updated measurements of the [O iii] 88 mu m, [C ii] 158 mu m, and dust continuum emission from a star-forming galaxy at z = 7.212, SXDF-NB1006-2, by utilizing Atacama Large Millimeter/submillimeter Array (ALMA) archival data sets analysed in previous studies and data sets that have not been analysed before. The follow-up ALMA observations with higher angular resolution and sensitivity reveal a clumpy structure of the [O iii] emission on a scale of 0.32-0.85 kpc. We also combined all the ALMA [O iii] ([C ii]) data sets and updated the [O iii] ([C ii]) detection to 5.9 sigma (3.6 sigma-4.5 sigma). The non-detection of [C ii] with data from the REBELS large program implies the incompleteness of spectral-scan surveys using [C ii] to detect galaxies with high star formation rates (SFRs) but marginal [C ii] emission at high-z. The dust continuum at 90 and 160 mu m remains undetected, indicating little dust content of M (circle dot) (3 sigma), and we obtained a more stringent constraint on the total infrared luminosity. We updated the [O iii]/[C ii] luminosity ratios to 10.2 +/- 4.7 (6.1 +/- 3.5) and 20 +/- 12 (9.6 +/- 6.1) for the 4.5 sigma and 3.6 sigma [C ii] detections, respectively, where the ratios in the parentheses are corrected for the surface brightness dimming effect on the extended [C ii] emission. We also found a strong [C ii] deficit (0.6-1.3 dex) between SXDF-NB1006-2 and the mean L ([C II])-SFR relation of galaxies at 0 < z < 9.