1. Department of Physics and Astronomy, Embry Riddle Aeronautical University , 3700 Willow Creek Road, Prescott, AZ 86301, USA
2. Département de physique, Université de Montréal, Complexe des Sciences , 1375 Avenue Thérèse-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
3. Department of Astronomy, University of Michigan , 1085 S. University, Ann Arbor, MI 48109, USA
4. NSF’s NOIRLab , 670 N. A’ohoku Place, Hilo, HI 96720, USA
5. CRESST & X-ray Astrophysics Laboratory, NASA/Goddard Space Flight Center , Greenbelt, MD 20771, USA
6. Institute for Astrophysics and Computational Sciences, The Catholic University of America , 620 Michigan Ave., N.E., Washington, DC 20064, USA
7. Universidade de São Paulo, Instituto de Astronomia, Geofísica e Ciências Atmosféricas , Rua do Matão, 1226, São Paulo - SP 05508-090, Brazil
8. Exoplanets & Stellar Astrophysics Laboratory, NASA/Goddard Space Flight Center , Greenbelt, MD 20771, USA
9. Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
10. Department of Physics & Astronomy & Pittsburgh Particle Physics, Astrophysics, & Cosmology Center (PITT PACC), University of Pittsburgh , 3941 O’Hara Street, Pittsburgh, PA 15260, USA
11. California Institute of Technology , IPAC, M/C 100-22, Pasadena, CA 91125, USA
12. American Association of Variable Star Observers , 49 Bay State Road, Cambridge, MA 02138, USA
13. Department of Physics, Clarkson University , 8 Clarkson Ave., Potsdam, NY 13699, USA
14. School of Physics and Astronomy, University of Birmingham , Birmingham B15 2TT, UK
15. Max Planck Institute for Radio Astronomy , Auf dem Hügel 69, D-53121 Bonn, Germany