1. School of Physics and Astronomy, University of Birmingham , Edgbaston B15 2TT , UK
2. Institute for Gravitational Wave Astronomy, University of Birmingham , Edgbaston B15 2TT , UK
3. Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast , Belfast BT7 1NN , UK
4. Department of Astrophysical Sciences, Princeton University , Princeton, NJ 08544 , USA
5. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University , 1800 Sherman Avenue 8th Floor, Evanston, IL 60201 , USA
6. Department of Astronomy, University of California , Berkeley, CA 94720–3411 , USA
7. School of Physics, O’Brien Centre for Science North, University College Dublin , Belfield, Dublin 4, D04 P7W1 , Ireland
8. Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218 , USA
9. Department of Physics and Astronomy, University of Turku , FI-20500 Turku , Finland
10. School of Sciences, European University Cyprus , Diogenes Street, Engomi, 1516, Nicosia , Cyprus
11. Department of Physics and Astronomy, Vanderbilt University , Nashville, TN 37235 , USA
12. Department of Astronomy/Steward Observatory , 933 North Cherry Avenue, Rm. N204, Tucson, AZ 85721–0065 , USA
13. Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, PL-00–478 Warszawa , Poland
14. Institute for Astronomy, University of Edinburgh, Royal Observatory , Blackford Hill, Edinburgh EH9 3HJ , UK
15. Cosmic Dawn Center (DAWN) , 2800 Kgs. Lyngby , Denmark
16. Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N , Denmark
17. European Southern Observatory , Alonso de Córdova 3107, Casilla 19, Santiago , Chile
18. Millennium Institute of Astrophysics MAS , Nuncio Monsenor Sotero Sanz 100, Off. 104, Providencia, Santiago , Chile
19. INAF-Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova , Italy
20. Center for Astrophysics, Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138–1516 , USA
21. Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822 , USA
22. Technische Universität München, TUM School of Natural Sciences, Physik-Department , James-Franck-Straße 1, D-85748 Garching , Germany
23. Institut d’Estudis Espacials de Catalunya (IEEC), Gran Capità , 2–4, Edifici Nexus, Desp. 201, E-08034 Barcelona , Spain
24. Institute of Space Sciences (ICE, CSIC) , Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona , Spain
25. Cardiff Hub for Astrophysics Research and Technology, School of Physics & Astronomy, Cardiff University, Queens Buildings , The Parade, Cardiff CF24 3AA , UK
26. Finnish Centre for Astronomy with ESO (FINCA), University of Turku , FI-20014 Turku , Finland
27. Tuorla Observatory, Department of Physics and Astronomy, University of Turku , FI-20014 Turku , Finland
28. DTU Space, National Space Institute, Technical University of Denmark , Elektrovej 327, DK-2800 Kgs. Lyngby , Denmark
29. The School of Physics and Astronomy, Tel Aviv University , Tel Aviv 69978 , Israel
30. Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford OX1 3RH , UK
31. Department of Astronomy, University of Illinois at Urbana-Champaign , 1002 W. Green Street, Urbana, IL 61801 , USA
32. Sternberg Astronomical Institute, Moscow State University , Universitetskii pr. 13, 119992 Moscow, Russia