[1] Univ Amsterdam, Anton Pannekoek Inst Astron API, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
[2] Univ Galway, Sch Nat Sci, Ctr Astron, Galway H91 CF50, Ireland
[3] INAF, Osservatorio Astrofis Arcetri, I-50125 Florence, Italy
[4] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
[5] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA
[6] Univ Grenoble Alps, CNRS, IPAG, F-38000 Grenoble, France
[7] Ludwig Maximilians Univ Munchen, Univ Observ, Fac Phys, Scheinerstr 1, D-81679 Munich, Germany
[8] Exzellenzcluster ORIGINS, Boltzmannstr 2, D-85748 Garching, Germany
[9] Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy
[10] Univ Padua, Dept Phys & Astron Galileo Galilei, Vicolo dellOsservatorio 3, I-35122 Padua, Italy
[11] INAF Osservatorio Astronom Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
[12] Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands
[13] European Southern Observ, Alonso Cordova 3107,Casilla 19001, Santiago, Chile
[14] Columbia Univ, Dept Astron, 538 W 120th St,Pupin Hall, New York, NY 10027 USA
[15] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
[16] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
[17] Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England
[18] Max Planck Inst Extraterr Phys, Giessenbach Str 1, D-85748 Garching, Germany
[19] Amer Univ Beirut, Dept Phys, POB 11-0236, Beirut 110972020, Lebanon
[20] Univ Diego Port, Inst Estudios Astrofis, Fac Ingn & Ciencias, Ejercito Libertador 441, Santiago, Chile
[21] Univ Diego Portales, Fac Ingn & Ciencias, Escuela Ingn Ind, Ave Ejercito Libertador 441, Santiago, Chile