1. Núcleo de Astronomía, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
2. Millennium Nucleus ‘Protoplanetary discs in ALMA Early Science’, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
3. Departamento de Astronomía, Universidad de Chile, Casilla 36-D Santiago, Chile
4. Institute for Astronomy, University of Hawaii at Manoa, Honolulu, HI 96822, USA
5. Massachusetts Institute of Technology, Kavli Institute for Astrophysics, Cambridge, 02139 MA, USA
6. Joint ALMA Observatory, Alonso de Cordova 3107, Vitacura 763-0355, Santiago, Chile
7. National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-2475, USA
8. Millennium Institute of Astrophysics, 8970117 Santiago, Chile
9. Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks Street, Norman, OK 73019, USA
10. Leiden Observatory, Leiden University, PO Box 9513, NL-2300-RA Leiden, the Netherlands
11. Department of Physics and Astronomy, University of Nevada, Las Vegas, 4505 South Maryland Parkway, Las Vegas, NV 89154, USA
12. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK