Babusiaux, C, van Leeuwen, F, Barstow, MA, Jordi, C, Vallenari, A, Bossini, D, Bressan, A, Cantat-Gaudin, T, van Leeuwen, M, Brown, AGA, Prusti, T, de Bruijne, JHJ, Bailer-Jones, CAL, Biermann, M, Evans, DW, Eyer, L, Jansen, F, Klioner, SA, Lammers, U, Lindegren, L et al, Luri, X, Mignard, F, Panem, C, Pourbaix, D, Randich, S, Sartoretti, P, Siddiqui, HI, Soubiran, C, Walton, NA, Arenou, F, Bastian, U, Cropper, M, Drimmel, R, Katz, D, Lattanzi, MG, Bakker, J, Cacciari, C, Castaneda, J, Chaoul, L, Cheek, N, De Angeli, F, Fabricius, C, Guerra, R, Holl, B, Masana, E, Messineo, R, Mowlavi, N, Nienartowicz, K, Panuzzo, P, Portell, J, Riello, M, Seabroke, GM, Tanga, P, Thevenin, F, Gracia-Abril, G, Comoretto, G, Garcia-Reinaldos, M, Teyssier, D, Altmann, M, Andrae, R, Audard, M, Bellas-Velidis, I, Benson, K, Berthier, J, Blomme, R, Burgess, P, Busso, G, Carry, B, Cellino, A, Clementini, G, Clotet, M, Creevey, O, Davidson, M, De Ridder, J, Delchambre, L, Dell'Oro, A, Ducourant, C, Fernandez-Hernandez, J, Fouesneau, M, Fremat, Y, Galluccio, L, Garcia-Torres, M, Gonzalez-Nunez, J, Gonzalez-Vidal, JJ, Gosset, E, Guy, LP, Halbwachs, J-L, Hambly, NC, Harrison, DL, Hernandez, J, Hestroffer, D, Hodgkin, ST, Hutton, A, Jasniewicz, G, Jean-Antoine-Piccolo, A, Jordan, S, Korn, AJ, Krone-Martins, A, Lanzafame, AC, Lebzelter, T, Loeffler, W, Manteiga, M, Marrese, PM, Martin-Fleitas, JM, Moitinho, A, Mora, A, Muinonen, K, Osinde, J, Pancino, E, Pauwels, T, Petit, J-M, Recio-Blanco, A, Richards, PJ, Rimoldini, L, Robin, AC, Sarro, LM, Siopis, C, Smith, M, Sozzetti, A, Sueveges, M, Torra, J, van Reeven, W, Abbas, U, Abreu Aramburu, A, Accart, S, Aerts, C, Altavilla, G, Alvarez, MA, Alvarez, R, Alves, J, Anderson, RI, Andrei, AH, Anglada Varela, E, Antiche, E, Antoja, T, Arcay, B, Astraatmadja, TL, Bach, N, Baker, SG, Balaguer-Nunez, L, Balm, P, Barache, C, Barata, C, Barbato, D, Barblan, F, Barklem, PS, Barrado, D, Barros, M, Bartholome Munoz, S, Bassilana, J-L, Becciani, U, Bellazzini, M, Berihuete, A, Bertones, S, Bianchi, L, Bienayme, O, Blanco-Cuaresma, S, Boch, T, Boeche, C, Bombrun, A, Borrachero, R, Bouquillon, S, Bourda, G, Bragaglia, A, Bramante, L, Breddels, MA, Brouillet, N, Bruesemeister, T, Brugaletta, E, Bucciarelli, B, Burlacu, A, Busonero, D, Butkevich, AG, Buzzi, R, Caffau, E, Cancelliere, R, Cannizzaro, G, Carballo, R, Carlucci, T, Carrasco, JM, Casamiquela, L, Castellani, M, Castro-Ginard, A, Charlot, P, Chemin, L, Chiavassa, A, Cocozza, G, Costigan, G, Cowell, S, Crifo, F, Crosta, M, Crowley, C, Cuypers, J, Dafonte, C, Damerdji, Y, Dapergolas, A, David, P, David, M, de laverny, P, De Luise, F, De March, R, de Martino, D, de Souza, R, de Torres, A, Debosscher, J, del Pozo, E, Delbo, M, Delgado, A, Delgado, HE, Diakite, S, Diener, C, Distefano, E, Dolding, C, Drazinos, P, Duran, J, Edvardsson, B, Enke, H, Eriksson, K, Esquej, P, Bontemps, GE, Fabre, C, Fabrizio, M, Faigler, S, Falcao, AJ, Casas, MF, Federici, L, Fedorets, G, Fernique, P, Figueras, F, Filippi, F, Findeisen, K, Fonti, A, Fraile, E, Fraser, M, Frezouls, B, Gai, M, Galleti, S, Garabato, D, Garcia-Sedano, F, Garofalo, A, Garralda, N, Gavel, A, Gavras, P, Gerssen, J, Geyer, R, Giacobbe, P, Gilmore, G, Girona, S, Giuffrida, G, Glass, F, Gomes, M, Granvik, M, Gueguen, A, Guerrier, A, Guiraud, J, Gutierrez-Sanchez, R, Haigron, R, Hatzidimitriou, D, Hauser, M, Haywood, M, Heiter, U, Helmi, A, Heu, J, Hilger, T, Hobbs, D, Hofmann, W, Holland, G, Huckle, HE, Hypki, A, Icardi, V, Janssen, K, Jevardat de Fombelle, G, Jonker, PG, Juhasz, AL, Julbe, F, Karampelas, A, Kewley, A, Klar, J, Kochoska, A, Kohley, R, Kolenberg, K, Kontizas, M, Kontizas, E, Koposov, SE, Kordopatis, G, Kostrzewa-Rutkowska, Z, Koubsky, P, Lambert, S, Lanza, AF, Lasne, Y, Lavigne, J-B, Le Fustec, Y, Le Poncin-Lafitte, C, Lebreton, Y, Leccia, S, Leclerc, N, Lecoeur-Taibi, I, Lenhardt, H, Leroux, F, Liao, S, Licata, E, Lindstrom, HEP, Lister, TA, Livanou, E, Lobel, A, Lopez, M, Managau, S, Mann, RG, Mantelet, G, Marchal, O, Marchant, JM, Marconi, M, Marinoni, S, Marschalko, G, Marshall, DJ, Martino, M, Marton, G, Mary, N, Massari, D, Matijevic, G, Mazeh, T, McMillan, PJ, Messina, S, Michalik, D, Millar, NR, Molina, D, Molinaro, R, Molnar, L, Montegriffo, P, Mor, R, Morbidelli, R, Morel, T, Morris, D, Mulone, AF, Muraveva, T, Musella, I, Nelemans, G, Nicastro, L, Noval, L, O'Mullane, W, Ordenovic, C, Ordonez-Blanco, D, Osborne, P, Pagani, C, Pagano, I, Pailler, F, Palacin, H, Palaversa, L, Panahi, A, Pawlak, M, Piersimoni, AM, Pineau, F-X, Plachy, E, Plum, G, Poggio, E, Poujoulet, E, Prsa, A, Pulone, L, Racero, E, Ragaini, S, Rambaux, N, Ramos-Lerate, M, Regibo, S, Reyle, C, Riclet, F, Ripepi, V, Riva, A, Rivard, A, Rixon, G, Roegiers, T, Roelens, M, Romero-Gomez, M, Rowell, N, Royer, F, Ruiz-Dern, L, Sadowski, G, Sagrista Selles, T, Sahlmann, J, Salgado, J, Salguero, E, Sanna, N, Santana-Ros, T, Sarasso, M, Savietto, H, Schultheis, M, Sciacca, E, Segol, M, Segovia, JC, Segransan, D, Shih, I-C, Siltala, L, Silva, AF, Smart, RL, Smith, KW, Solano, E, Solitro, F, Sordo, R, Soria Nieto, S, Souchay, J, Spagna, A, Spoto, F, Stampa, U, Steele, IA, Steidelmueller, H, Stephenson, CA, Stoev, H, Suess, FF, Surdej, J, Szabados, L, Szegedi-Elek, E, Tapiador, D, Taris, F, Tauran, G, Taylor, MB, Teixeira, R, Terrett, D, Teyssandier, P, Thuillot, W, Titarenko, A, Clotet, FT, Turon, C, Ulla, A, Utrilla, E, Uzzi, S, Vaillant, M, Valentini, G, Valette, V, van Elteren, A, Van Hemelryck, E, Vaschetto, M, Vecchiato, A, Veljanoski, J, Viala, Y, Vicente, D, Vogt, S, von Essen, C, Voss, H, Votruba, V, Voutsinas, S, Walmsley, G, Weiler, M, Wertz, O, Wevers, T, Wyrzykowski, L, Yoldas, A, Zerjal, M, Ziaeepour, H, Zorec, J, Zschocke, S, Zucker, S, Zurbach, C and Zwitter, T (2018) Gaia Data Release 2 Observational Hertzsprung-Russell diagrams. Astronomy & Astrophysics, 616. ISSN 1432-0746