Univ Antofagasta, Ctr Astron CITEVA, Antofagasta 601, Chile.;Chinese Acad Sci, South Amer Ctr Astron, China Chile Joint Ctr Astron, Camino El Observ 1515, Santiago, Chile..
Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France..
Texas Christian Univ, Dept Phys & Astron, Ft Worth, TX 76129 USA..
Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA..
Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland..
Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.;Univ Notre Dame, JINA Ctr Evolut Elements, Notre Dame, IN 46556 USA..
Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA..
Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA.;Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Univ Skij Pr 13, Moscow 119991, Russia..
Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA..
Aix Marseille Univ, CNRS, LAM, Marseille, France..
Univ Antofagasta, Ctr Astron CITEVA, Antofagasta 601, Chile..
Univ Toronto, Dept Astron & Astrophys, 50 St George St, Toronto M5S 3H4, ON, Canada.;Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St. George St, Toronto, ON M5S 3H4, Canada..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Univ Utah, Dept Phys & Astron, 115 S 1400 E, Salt Lake City, UT 84112 USA..
Univ Calif Santa Cruz, Univ Calif Observ, Santa Cruz, CA 95064 USA..
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico.;Univ Nacl Autonoma Mexico, Inst Astron, CONACYT Res Fellow, AP 70-264, Mexico City 04510, DF, Mexico..
Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, Campus Morelia,AP 3-72, Morelia 58089, Michoacan, Mexico..
New York Univ Abu Dhabi, POB 129188, Abu Dhabi, U Arab Emirates..
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA..
Sejong Univ, Dept Astron & Space Sci, Seoul 143747, South Korea..
Korea Inst Adv Study, 85 Hoegiro, Seoul 02455, South Korea..
Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany..
Univ Colorado, Dept Astrophys & Planetary Sci, Ctr Astrophys & Space Astron, 389 UCB, Boulder, CO 80309 USA..
Univ Fed Santa Maria, Dept Fis, CCNE, BR-97105900 Santa Maria, RS, Brazil.;Lab Interinst & Astron, 77 Rua Gen Jose Cristino, BR-20921400 Rio De Janeiro, Brazil..
Lab Interinst & Astron, 77 Rua Gen Jose Cristino, BR-20921400 Rio De Janeiro, Brazil.;Observ Nacl, R Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil..
Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China..
Univ Oxford, Dept Phys, Subdept Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
Univ Utah, Dept Phys & Astron, 115 S 1400 E, Salt Lake City, UT 84112 USA..
Univ Paris 07, Univ Pierre & Marie Curie, CNRS IN2P3, LPNHE,Univ Paris 6, 4 Pl Jussieu, F-75252 Paris, France..
Univ Fed Santa Maria, Dept Fis, CCNE, BR-97105900 Santa Maria, RS, Brazil.;Lab Interinst & Astron, 77 Rua Gen Jose Cristino, BR-20921400 Rio De Janeiro, Brazil..
Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany..
Bates Coll, Dept Phys & Astron, 44 Campus Ave, Lewiston, ME 04240 USA..
Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA..
Texas Christian Univ, Dept Phys & Astron, Ft Worth, TX 76129 USA..
Univ Texas Austin, McDonald Observ, 1 Univ Stn, Austin, TX 78712 USA..
Univ Utah, Dept Phys & Astron, 115 S 1400 E, Salt Lake City, UT 84112 USA..
Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland..
Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany..
Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA..
Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile.;Univ Atacama, Inst Astron & Ciencias Planetarias, Copayapu 485, Copiapo, Chile.;Univ Bourgogne Franche Comte, OSU THETA Franche Comte Bourgogne, Observ Besancon, CNRS UMR6213,Inst UTINAM, BP 1615, F-25010 Besancon, France..
Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA..
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Univ Iowa, Dept Phys & Astron, Iowa City, IA 52245 USA..
Univ Pittsburgh, Dept Phys & Astron, PITT PACC, Pittsburgh, PA 15260 USA..
Inst Astrofis Canarias, E-38205 Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain..
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico..
Lab Interinst & Astron, 77 Rua Gen Jose Cristino, BR-20921400 Rio De Janeiro, Brazil.;Observ Nacl, R Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil..
Sorbonne Univ, ILP, 98 Bis Blvd Arago, F-75014 Paris, France.;Univ Paris 06, Lab Phys Nucl & Hautes Energies, 4 Pl Jussieu, F-75005 Paris, France..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Sejong Univ, Dept Astron & Space Sci, Seoul 143747, South Korea..
Bryn Mawr Coll, Dept Phys, Bryn Mawr, PA 19010 USA.;Haverford Coll, Dept Phys & Astron, 370 Lancaster Ave, Haverford, PA 19041 USA..
New Mexico State Univ, Dept Astron, Box 30001,MSC 4500, Las Cruces, NM 88003 USA..
Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA..
Penn State Univ, Eberly Coll Sci, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA..
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico..
Univ Portsmouth, Sch Math & Phys, Portsmouth PO1 3FX, Hants, England..
NYU, Dept Phys, Ctr Cosmol & Particle Phys, 726 Broadway,Room 1005, New York, NY 10003 USA..
New Mexico State Univ, Dept Astron, Box 30001,MSC 4500, Las Cruces, NM 88003 USA..
Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan..
Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St. George St, Toronto, ON M5S 3H4, Canada..
Inst Astrofis Canarias, E-38205 Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain..
Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA..
Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA.;New Mexico State Univ, Dept Astron, Box 30001,MSC 4500, Las Cruces, NM 88003 USA..
Inst Milenio Astrofis, Av Vicuna Mackenna 4860, Santiago, Chile.;Univ Catolica Norte, Inst Astron, Av Angamos 0610, Antofagasta, Chile..
Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan..
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA..
Sejong Univ, Dept Astron & Space Sci, Seoul 143747, South Korea..
Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China.;Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China..
Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan..
Univ Oxford, Dept Phys, Subdept Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Univ Antofagasta, Ctr Astron CITEVA, Antofagasta 601, Chile..
Univ Nacl Autonoma Mexico, Inst Fis, Apdo. Postal 20-364, Mexico City, DF, Mexico..
Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Penn State Univ, Eberly Coll Sci, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA..
Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23220 USA..
Univ Valparaiso, Inst Fis & Astron, Av Gran Bretana 1111,Casilla 5030, Playa Ancha, Chile..
Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany..
ELTE Gothard Astrophys Observ, Szent Imre herceg St 112, H-9704 Szombathely, Hungary..
Bates Coll, Dept Phys & Astron, 44 Campus Ave, Lewiston, ME 04240 USA..
Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA..
Univ Pittsburgh, Dept Phys & Astron, PITT PACC, Pittsburgh, PA 15260 USA..
Univ Antofagasta, Ctr Astron CITEVA, Antofagasta 601, Chile..
Kings Coll, 133 North River St, Wilkes Barre, PA 18711 USA..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico..
Inst Astrofis Canarias, E-38205 Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
Univ Portsmouth, Inst Cosmol Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England..
Apache Point Observ, POB 59, Sunspot, NM 88349 USA..
UPMC, UMR 7095, CNRS, Inst Astropys Paris, 98bis Bd Arago, F-75014 Paris, France..
Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England..
CALTECH, Infrared Proc & Anal Ctr, MC 100-22,1200 Calif Blvd, Pasadena, CA 91125 USA..
Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA..
EPFL, Obser Sauverny, Lab Astrophys, Inst Phys, CH-1290 Versoix, Switzerland..
Univ Fed Santa Maria, Dept Fis, CCNE, BR-97105900 Santa Maria, RS, Brazil.;Lab Interinst & Astron, 77 Rua Gen Jose Cristino, BR-20921400 Rio De Janeiro, Brazil..
Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany..
Sejong Univ, Dept Astron & Space Sci, Seoul 143747, South Korea..
San Diego State Univ, Dept Astron, San Diego, CA 92182 USA..
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico..
Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA..
Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA..
Univ Wisconsin, Dept Astron, 475 N Charter St, Madison, WI 53726 USA..
Univ Fed Santa Maria, Dept Fis, CCNE, BR-97105900 Santa Maria, RS, Brazil.;Lab Interinst & Astron, 77 Rua Gen Jose Cristino, BR-20921400 Rio De Janeiro, Brazil..
Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA..
Penn State Univ, Eberly Coll Sci, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA.;Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA..
Univ Cote dAzur, Lab Lagrange, Observ Cote dAzur, CNRS, Blvd Observ, F-06304 Nice, France..
Haverford Coll, Dept Phys & Astron, 370 Lancaster Ave, Haverford, PA 19041 USA..
Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Shanghai, Peoples R China..
Univ Wisconsin, Dept Astron, 475 N Charter St, Madison, WI 53726 USA..
Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA..
Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England.;Univ Oxford, Dept Phys, Subdept Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA..
Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA..
Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan..
Univ Colorado, Dept Astrophys & Planetary Sci, Ctr Astrophys & Space Astron, 389 UCB, Boulder, CO 80309 USA..
Texas Christian Univ, Dept Phys & Astron, Ft Worth, TX 76129 USA..
Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA.;Johns Hopkins Univ, Inst Data Intens Engn & Sci, 3400 N Charles St, Baltimore, MD 21218 USA..
Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA..
Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA..
Univ Portsmouth, Inst Cosmol Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England..
Univ Andres Bello, Fac Ciencias Exactas, Dept Fis, Av Fernandez Concha 700, Santiago, Chile..
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico..
Univ North Carolina Asheville, Dept Phys, One Univ Hts, Asheville, NC 28804 USA..
Natl Opt Astron Observ, 950 North Cherry Ave, Tucson, AZ 85719 USA..
Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA..
Bates Coll, Dept Phys & Astron, 44 Campus Ave, Lewiston, ME 04240 USA..
Univ Kentucky, Dept Phys & Astron, 505 Rose St, Lexington, KY 40506 USA..
Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA..
Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA..
Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China..
Institute of Physics Publishing (IOPP), 2019. Vol. 240, no 2, article id 23