1. European Space Astronomy Center (ESAC), Villanueva de la Cañada, E-28692 Madrid, Spain
2. Instituto de Física Teórica (IFT) UAM/CSIC, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
3. Campus of International Excellence UAM/CSIC, Cantoblanco, E-28049 Madrid, Spain
4. Departamento de Física Teórica M-8, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
5. Instituto de Astrofísica de Andalucía (CSIC), Granada E-18008, Spain
6. Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Shanghai 200030, China
7. Astronomy Department, New Mexico State University, MSC 4500, PO Box 30001, Las Cruces, NM 880003-8001, USA
8. Department of Physics and Astronomy, University of Utah, UT 84112, USA