1. Department of Physics, Graduate School of Science, Nagoya University , Nagoya, Aichi 464-8602, Japan
2. National Astronomical Observatory of Japan , 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan
3. School of Physical Sciences, The Open University , Milton Keynes MK7 6AA, UK
4. UK ALMA Regional Centre Node, Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester , Oxford Road, Manchester M13 9PL, UK
5. School of Physics and Astronomy, Cardiff University , The Parade, Cardiff CF24 3AA, UK
6. European Southern Observatory , Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
7. Institute for Advanced Research, Nagoya University , Furocho, Chikusa, Nagoya 464-8602, Japan
8. Institut de Radioastronomie Millimétrique (IRAM) , 300 Rue de la Piscine, F-38400 Saint-Martin-d’Hères, France
9. Department of Physics & Astronomy, University of California , Irvine, 4129 Reines Hall, Irvine, CA 92697, USA
10. Institut d’Astrophysique de Paris, Sorbonne Université,UPMC Université Paris 6 and CNRS , UMR 7095, 98 bis boulevard Arago, F-75014 Paris, France
11. INAF – Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
12. Centre de Recherche Astrophysique de Lyon, ENS de Lyon, Université Lyon 1, CNRS, UMR5574 , F-69230 Saint-Genis-Laval, France
13. I. Physikalisches Institut, Universität zu Köln , Zülpicher Strasse 77, D-50937 Köln, Germany
14. Department of Physics and Astronomy, University of British Columbia , 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada
15. Astrophysics Branch, NASA–Ames Research Center , MS 245-6, Moffett Field, CA 94035, USA
16. Leiden Observatory, Leiden University , PO Box 9513, NL-2300 RA Leiden, the Netherlands
17. Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Observatory , SE-439 94 Onsala, Sweden
18. Department of Physics, Centre for Extragalactic Astronomy, Durham University , South Road, Durham DH1 3LE, UK
19. European Southern Observatory , Karl Schwarzschild Strasse 2, D-85748 Garching, Germany
20. Department of Physics and Astronomy, Rutgers, the State University of New Jersey , 136 Frelinghuysen Road, Piscataway, NJ 08854-8019, USA
21. Department of Physics and Astronomy, University of the Western Cape , Robert Sobukwe Road, Bellville 7535, South Africa
22. Aix-Mar seille Univer sitè, CNRS and CNES, Laboratoire d’Astrophysique de Marseille , 38, rue Frèdèric Joliot-Curie, F-13388 Marseille, France
23. Dipartimento di Fisica e Astronomia ‘G. Galilei’, Universit’di Padova , Vicolo dell’Osservatorio 3, I-35122 Padova, Italy
24. Instituto Astrofísica de Canarias (IAC) , E-38205 La Laguna, Tenerife, Spain
25. Departomento de Astrofísica, Universidad de La Laguna , E-38206 La Laguna, Tenerife, Spain
26. School of Physics & Astronomy, University of Nottingham, University Park , Nottingham NG7 2RD, UK
27. Department of Physics and Astronomy ‘Augusto Righi’ (DIFA), University of Bologna , Via Gobetti 93/2, I-40129 Bologna, Italy
28. INAF–Osservatorio di Astrofisica e Scienza dello Spazio , Via Gobetti 93/3, I-40129 Bologna, Italy
29. CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China , Hefei 230026, People’s Republic of China
30. School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China
31. Institute of Deep Space Sciences, Deep Space Exploration Laboratory , Hefei 230026, People’s Republic of China
32. Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB30HA, UK
33. Departamento de Fisica, Universidad de Oviedo , C. Federico Garcia Lorca 18, E-33007 Oviedo, Spain
34. Instituto Universitario de Ciencias y Tecnologas Espaciales de Asturias (ICTEA) , C. Independencia 13, E-33004 Oviedo, Spain
35. Department of Astronomy, University of Maryland , College Park, MD 20742, USA
36. Instituto Nacional de Astrofísica, Óptica y Electrónica , Tonantzintla, 72000 Puebla, México
37. Institute of Astronomy, Graduate School of Science, The University of Tokyo , 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
38. Research Center for the Early Universe, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
39. Department of Astronomy, University of Cape Town , Private Bag X3, Rondebosch 7701, Cape Town, South Africa
40. INAF, Instituto di Radioastronomia-Italian ARC , Via Piero Gobetti 101, I-40129 Bologna, Italy
41. SISSA , Via Bonomea 265, I-34136 Trieste, Italy
42. Joint ALMA Observatory , Alonso de Córdova 3107, Vitacura 763-0355, Santiago de Chile, Chile
43. Sub-department of Astrophysics, University of Oxford, Denys Wilkinson Building , Keble Road, Oxford OX1 3RH, UK
44. National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA
45. Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany