tokens: We thank the referee for many insightful comments and for discussion that helped to improve this paper significantly. The authors thank Merel van ’t Hoff, Jeong-Eun Lee, and Marc Audard for providing valuable discussions. This paper makes use of the following ALMA data: ADS/JAO.ALMA#2017.1.01693.S. ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. T.H.H. and N.H. acknowledge the support by Ministry of Science and Technology of Taiwan (MoST) 107-2119-M-001-041 and 108-2112-M-001-048. N.H. acknowledges a grant from MoST 108-2112-M-001-017. C.W. acknowledges financial support from the University of Leeds and from the Science Facilities and Technology Council (STFC), under grant No. ST/R000549/1. J.K.J. acknowledges support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement No. 646908). S.-P.L. acknowledges the support from the Ministry of Science and Technology ( MOST ) of Taiwan with grant MOST 106-2119-M-007-021-MY3. Software: CASA (McMullin et al. 2007 ), RADMC-3D (Dullemond et al. 2012 ), Astropy (Astropy Collaboration et al. 2013 ), APLpy (Robitaille Bressert 2012 ).
ner_tags: O O O O O O O O O O O O O O O O O O O O O B-Person I-Person I-Person I-Person B-Person I-Person O B-Person I-Person O O O O O O O O O O O B-Observatory O B-Identifier B-Observatory O O O O B-Observatory O O O O B-Organization B-Location O B-Organization B-Location O O B-Organization B-Location B-Organization O B-Organization B-Location O B-Organization B-Location I-Location I-Location O O O O B-Location I-Location I-Location O B-Observatory I-Observatory I-Observatory O O O B-Observatory B-Organization O B-Observatory B-Person O B-Person O O O O B-Organization I-Organization I-Organization I-Organization I-Organization O B-Location B-Organization B-Grant O B-Grant B-Person O O O O B-Organization B-Grant B-Person O O O O O B-Organization I-Organization I-Organization O O O B-Organization I-Organization I-Organization I-Organization I-Organization B-Organization O B-Grant I-Grant I-Grant B-Person O O O O B-Organization I-Organization I-Organization B-Organization O O B-Location I-Location B-Grant I-Grant I-Grant I-Grant I-Grant I-Grant B-Grant I-Grant I-Grant I-Grant B-Person O O O O O B-Organization I-Organization I-Organization I-Organization I-Organization O B-Organization O O B-Location O O B-Organization B-Grant O B-Software B-Citation I-Citation I-Citation I-Citation O B-Software B-Citation I-Citation I-Citation I-Citation O B-Software B-Citation I-Citation I-Citation I-Citation I-Citation O B-Software B-Citation I-Citation I-Citation O