1. Department of Physics and Astronomy, University of California , Riverside, CA 92501, USA
2. Gemini Observatory / NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
3. Steward Observatory, University of Arizona , Tucson, AZ 85721, USA
4. Space Telescope Science Institute , Baltimore, MD 21218, USA
5. Department of Physics and Astronomy, University of Toledo , Toledo, OH 43606, USA
6. Department of Astronomy, The Oskar Klein Centre, Stockholm University , Stockholm 10691, Sweden
7. Instituto de Astronomia, Universidad Nacional Autonoma de Mexico , Unidad Academica en Ensenada, Km 103 Carr. Tijuana-Ensenada, Ensenada 04510, Mexico
8. Department of Astronomy, University of Massachusetts , Amherst, MA 01003, USA
9. Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg , Mönchhofstraße 12-14, D-69120 Heidelberg, Germany
10. International Centre for Radio Astronomy Research, University of Western Australia , 7 Fairway, Crawley, 6009 WA, Australia
11. Argelander-Institut für Astronomie, Universität Bonn , Auf dem Hügel 71, D-53121 Bonn, Germany
12. Centro de Astronomía (CITEVA), Universidad de Antofagasta , Avenida Angamos 601, Antofagasta 02800, Chile
13. INAF – Osservatorio Astrofisico di Arcetri , Largo E. Fermi 5, I-50157 Firenze, Italy
14. Astronomy Department, University of Virginia , 530 McCormick Road, Charlottesville, VA 22904, USA