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  Gaia Data Release 2. Observational Hertzsprung-Russell diagrams

Collaboration, G., Babusiaux, C., van Leeuwen, F., Barstow, M. A., Jordi, C., Vallenari, A., Bossini, D., Bressan, A., Cantat-Gaudin, T., van Leeuwen, M., Brown, A. G. A., Prusti, T., de Bruijne, J. H. J., Bailer-Jones, C. A. L., Biermann, M., Evans, D. W., Eyer, L., Jansen, F., Klioner, S. A., Lammers, U., Lindegren, L., Luri, X., Mignard, F., Panem, C., Pourbaix, D., Randich, S., Sartoretti, P., Siddiqui, H. I., Soubiran, C., Walton, N. A., Arenou, F., Bastian, U., Cropper, M., Drimmel, R., Katz, D., Lattanzi, M. G., Bakker, J., Cacciari, C., Castañeda, 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, G. M., Tanga, P., Thévenin, 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., Fernández-Hernández, J., Fouesneau, M., Frémat, Y., Galluccio, L., García-Torres, M., González-Núñez, J., González-Vidal, J. J., Gosset, E., Guy, L. P., Halbwachs, J.-.-L., Hambly, N. C., Harrison, D. L., Hernández, J., Hestroffer, D., Hodgkin, S. T., Hutton, A., Jasniewicz, G., Jean-Antoine-Piccolo, A., Jordan, S., Korn, A. J., Krone-Martins, A., Lanzafame, A. C., Lebzelter, T., Löffler, W., Manteiga, M., Marrese, P. M., Martín-Fleitas, J. M., Moitinho, A., Mora, A., Muinonen, K., Osinde, J., Pancino, E., Pauwels, T., Petit, J.-.-M., Recio-Blanco, A., Richards, P. J., Rimoldini, L., Robin, A. C., Sarro, L. M., Siopis, C., Smith, M., Sozzetti, A., Süveges, M., Torra, J., van Reeven, W., Abbas, U., Abreu Aramburu, A., Accart, S., Aerts, C., Altavilla, G., Álvarez, M. A., Alvarez, R., Alves, J., Anderson, R. I., Andrei, A. H., Anglada Varela, E., Antiche, E., Antoja, T., Arcay, B., Astraatmadja, T. L., Bach, N., Baker, S. G., Balaguer-Núñez, L., Balm, P., Barache, C., Barata, C., Barbato, D., Barblan, F., Barklem, P. S., Barrado, D., Barros, M., Bartholomé Muñoz, L., Bassilana, J.-.-L., Becciani, U., Bellazzini, M., Berihuete, A., Bertone, S., Bianchi, L., Bienaymé, O., Blanco-Cuaresma, S., Boch, T., Boeche, C., Bombrun, A., Borrachero, R., Bouquillon, S., Bourda, G., Bragaglia, A., Bramante, L., Breddels, M. A., Brouillet, N., Brüsemeister, T., Brugaletta, E., Bucciarelli, B., Burlacu, A., Busonero, D., Butkevich, A. G., Buzzi, R., Caffau, E., Cancelliere, R., Cannizzaro, G., Carballo, R., Carlucci, T., Carrasco, J. M., 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, H. E., Diakite, S., Diener, C., Distefano, E., Dolding, C., Drazinos, P., Durán, J., Edvardsson, B., Enke, H., Eriksson, K., Esquej, P., Eynard Bontemps, G., Fabre, C., Fabrizio, M., Faigler, S., Falcão, A. J., Farràs Casas, M., Federici, L., Fedorets, G., Fernique, P., Figueras, F., Filippi, F., Findeisen, K., Fonti, A., Fraile, E., Fraser, M., Frézouls, B., Gai, M., Galleti, S., Garabato, D., García-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., Gutié, R., Haigron, R., Hatzidimitriou, D., Hauser, M., Haywood, M., Heiter, U., Helmi, A., Heu, J., Hilger, T., Hobbs, D., Hofmann, W., Holland, G., Huckle, H. E., Hypki, A., Icardi, V., Janßen, K., Jevardat de Fombelle, G., Jonker, P. G., Juhász, Á. L., Julbe, F., Karampelas, A., Kewley, A., Klar, J., Kochoska, A., Kohley, R., Kolenberg, K., Kontizas, M., Kontizas, E., Koposov, S. E., Kordopatis, G., Kostrzewa-Rutkowska, Z., Koubsky, P., Lambert, S., Lanza, A. F., 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., Lindstrøm, H. E. P., Lister, T. A., Livanou, E., Lobel, A., López, M., Managau, S., Mann, R. G., Mantelet, G., Marchal, O., Marchant, J. M., Marconi, M., Marinoni, S., Marschalkó, G., Marshall, D. J., Martino, M., Marton, G., Mary, N., Massari, D., Matijevič, G., Mazeh, T., McMillan, P. J., Messina, S., Michalik, D., Millar, N. R., Molina, D., Molinaro, R., Molnár, L., Montegriffo, P., Mor, R., Morbidelli, R., Morel, T., Morris, D., Mulone, A. F., Muraveva, T., Musella, I., Nelemans, G., Nicastro, L., Noval, L., O'Mullane, W., Ordénovic, C., Ordóñez-Blanco, D., Osborne, P., Pagani, C., Pagano, I., Pailler, F., Palacin, H., Palaversa, L., Panahi, A., Pawlak, M., Piersimoni, A. M., Pineau, F.-.-X., Plachy, E., Plum, G., Poggio, E., Poujoulet, E., Prša, A., Pulone, L., Racero, E., Ragaini, S., Rambaux, N., Ramos-Lerate, M., Regibo, S., Reylé, C., Riclet, F., Ripepi, V., Riva, A., Rivard, A., Rixon, G., Roegiers, T., Roelens, M., Romero-Gómez, M., Rowell, N., Royer, F., Ruiz-Dern, L., Sadowski, G., Sagristà Sellés, T., Sahlmann, J., Salgado, J., Salguero, E., Sanna, N., Santana-Ros, T., Sarasso, M., Savietto, H., Schultheis, M., Sciacca, E., Segol, M., Segovia, J. C., Ségransan, D., Shih, I.-.-C., Siltala, L., Silva, A. F., Smart, R. L., Smith, K. W., Solano, E., Solitro, F., Sordo, R., Soria Nieto, S., Souchay, J., Spagna, A., Spoto, F., Stampa, U., Steele, I. A., Steidelmüller, H., Stephenson, C. A., Stoev, H., Suess, F. F., Surdej, J., Szabados, L., Szegedi-Elek, E., Tapiador, D., Taris, F., Tauran, G., Taylor, M. B., Teixeira, R., Terrett, D., Teyssandier, P., Thuillot, W., Titarenko, A., Torra Clotet, F., 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, Ł., Yoldas, A., Žerjal, M., Ziaeepour, H., Zorec, J., Zschocke, S., Zucker, S., Zurbach, C., & Zwitter, T. (2018). Gaia Data Release 2. Observational Hertzsprung-Russell diagrams. Astronomy and Astrophysics, 616.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0005-CE5E-B 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0005-CE5F-A
資料種別: 学術論文

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URL:
https://ui.adsabs.harvard.edu/abs/2018A&A...616A..10G (全文テキスト（全般）)
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 作成者:
Collaboration, Gaia1, 著者
Babusiaux, C.1, 著者
van Leeuwen, F.1, 著者
Barstow, M. A.1, 著者
Jordi, C.1, 著者
Vallenari, A.1, 著者
Bossini, D.1, 著者
Bressan, A.1, 著者
Cantat-Gaudin, T.1, 著者
van Leeuwen, M.1, 著者
Brown, A. G. A.1, 著者
Prusti, T.1, 著者
de Bruijne, J. H. J.1, 著者
Bailer-Jones, C. A. L.1, 著者
Biermann, M.1, 著者
Evans, D. W.1, 著者
Eyer, L.1, 著者
Jansen, F.1, 著者
Klioner, S. A.1, 著者
Lammers, U.1, 著者
Lindegren, L.1, 著者Luri, X.1, 著者Mignard, F.1, 著者Panem, C.1, 著者Pourbaix, D.1, 著者Randich, S.1, 著者Sartoretti, P.1, 著者Siddiqui, H. I.1, 著者Soubiran, C.1, 著者Walton, N. A.1, 著者Arenou, F.1, 著者Bastian, U.1, 著者Cropper, M.1, 著者Drimmel, R.1, 著者Katz, D.1, 著者Lattanzi, M. G.1, 著者Bakker, J.1, 著者Cacciari, C.1, 著者Castañeda, J.1, 著者Chaoul, L.1, 著者Cheek, N.1, 著者De Angeli, F.1, 著者Fabricius, C.1, 著者Guerra, R.1, 著者Holl, B.1, 著者Masana, E.1, 著者Messineo, R.1, 著者Mowlavi, N.1, 著者Nienartowicz, K.1, 著者Panuzzo, P.1, 著者Portell, J.1, 著者Riello, M.1, 著者Seabroke, G. M.1, 著者Tanga, P.1, 著者Thévenin, F.1, 著者Gracia-Abril, G.1, 著者Comoretto, G.1, 著者Garcia-Reinaldos, M.1, 著者Teyssier, D.1, 著者Altmann, M.1, 著者Andrae, R.1, 著者Audard, M.1, 著者Bellas-Velidis, I.1, 著者Benson, K.1, 著者Berthier, J.1, 著者Blomme, R.1, 著者Burgess, P.1, 著者Busso, G.1, 著者Carry, B.1, 著者Cellino, A.1, 著者Clementini, G.1, 著者Clotet, M.1, 著者Creevey, O.1, 著者Davidson, M.1, 著者De Ridder, J.1, 著者Delchambre, L.1, 著者Dell'Oro, A.1, 著者Ducourant, C.1, 著者Fernández-Hernández, J.1, 著者Fouesneau, M.1, 著者Frémat, Y.1, 著者Galluccio, L.1, 著者García-Torres, M.1, 著者González-Núñez, J.1, 著者González-Vidal, J. J.1, 著者Gosset, E.1, 著者Guy, L. P.1, 著者Halbwachs, J. -L.1, 著者Hambly, N. C.1, 著者Harrison, D. L.1, 著者Hernández, J.1, 著者Hestroffer, D.1, 著者Hodgkin, S. T.1, 著者Hutton, A.1, 著者Jasniewicz, G.1, 著者Jean-Antoine-Piccolo, A.1, 著者Jordan, S.1, 著者Korn, A. J.1, 著者Krone-Martins, A.1, 著者Lanzafame, A. C.1, 著者Lebzelter, T.1, 著者Löffler, W.1, 著者Manteiga, M.1, 著者Marrese, P. M.1, 著者Martín-Fleitas, J. M.1, 著者Moitinho, A.1, 著者Mora, A.1, 著者Muinonen, K.1, 著者Osinde, J.1, 著者Pancino, E.1, 著者Pauwels, T.1, 著者Petit, J. -M.1, 著者Recio-Blanco, A.1, 著者Richards, P. J.1, 著者Rimoldini, L.1, 著者Robin, A. C.1, 著者Sarro, L. M.1, 著者Siopis, C.1, 著者Smith, M.1, 著者Sozzetti, A.1, 著者Süveges, M.1, 著者Torra, J.1, 著者van Reeven, W.1, 著者Abbas, U.1, 著者Abreu Aramburu, A.1, 著者Accart, S.1, 著者Aerts, C.1, 著者Altavilla, G.1, 著者Álvarez, M. A.1, 著者Alvarez, R.1, 著者Alves, J.1, 著者Anderson, R. I.1, 著者Andrei, A. H.1, 著者Anglada Varela, E.1, 著者Antiche, E.1, 著者Antoja, T.1, 著者Arcay, B.1, 著者Astraatmadja, T. L.1, 著者Bach, N.1, 著者Baker, S. G.1, 著者Balaguer-Núñez, L.1, 著者Balm, P.1, 著者Barache, C.1, 著者Barata, C.1, 著者Barbato, D.1, 著者Barblan, F.1, 著者Barklem, P. S.1, 著者Barrado, D.1, 著者Barros, M.1, 著者Bartholomé Muñoz, L.1, 著者Bassilana, J. -L.1, 著者Becciani, U.1, 著者Bellazzini, M.1, 著者Berihuete, A.1, 著者Bertone, S.1, 著者Bianchi, L.1, 著者Bienaymé, O.1, 著者Blanco-Cuaresma, S.1, 著者Boch, T.1, 著者Boeche, C.1, 著者Bombrun, A.1, 著者Borrachero, R.1, 著者Bouquillon, S.1, 著者Bourda, G.1, 著者Bragaglia, A.1, 著者Bramante, L.1, 著者Breddels, M. A.1, 著者Brouillet, N.1, 著者Brüsemeister, T.1, 著者Brugaletta, E.1, 著者Bucciarelli, B.1, 著者Burlacu, A.1, 著者Busonero, D.1, 著者Butkevich, A. G.1, 著者Buzzi, R.1, 著者Caffau, E.1, 著者Cancelliere, R.1, 著者Cannizzaro, G.1, 著者Carballo, R.1, 著者Carlucci, T.1, 著者Carrasco, J. M.1, 著者Casamiquela, L.1, 著者Castellani, M.1, 著者Castro-Ginard, A.1, 著者Charlot, P.1, 著者Chemin, L.1, 著者Chiavassa, A.1, 著者Cocozza, G.1, 著者Costigan, G.1, 著者Cowell, S.1, 著者Crifo, F.1, 著者Crosta, M.1, 著者Crowley, C.1, 著者Cuypers, J.1, 著者Dafonte, C.1, 著者Damerdji, Y.1, 著者Dapergolas, A.1, 著者David, P.1, 著者David, M.1, 著者de Laverny, P.1, 著者De Luise, F.1, 著者De March, R.1, 著者de Martino, D.1, 著者de Souza, R.1, 著者de Torres, A.1, 著者Debosscher, J.1, 著者del Pozo, E.1, 著者Delbo, M.1, 著者Delgado, A.1, 著者Delgado, H. E.1, 著者Diakite, S.1, 著者Diener, C.1, 著者Distefano, E.1, 著者Dolding, C.1, 著者Drazinos, P.1, 著者Durán, J.1, 著者Edvardsson, B.1, 著者Enke, H.1, 著者Eriksson, K.1, 著者Esquej, P.1, 著者Eynard Bontemps, G.1, 著者Fabre, C.1, 著者Fabrizio, M.1, 著者Faigler, S.1, 著者Falcão, A. J.1, 著者Farràs Casas, M.1, 著者Federici, L.1, 著者Fedorets, G.1, 著者Fernique, P.1, 著者Figueras, F.1, 著者Filippi, F.1, 著者Findeisen, K.1, 著者Fonti, A.1, 著者Fraile, E.1, 著者Fraser, M.1, 著者Frézouls, B.1, 著者Gai, M.1, 著者Galleti, S.1, 著者Garabato, D.1, 著者García-Sedano, F.1, 著者Garofalo, A.1, 著者Garralda, N.1, 著者Gavel, A.1, 著者Gavras, P.1, 著者Gerssen, J.1, 著者Geyer, R.1, 著者Giacobbe, P.1, 著者Gilmore, G.1, 著者Girona, S.1, 著者Giuffrida, G.1, 著者Glass, F.1, 著者Gomes, M.1, 著者Granvik, M.1, 著者Gueguen, A.1, 著者Guerrier, A.1, 著者Guiraud, J.1, 著者Gutié, R.1, 著者Haigron, R.1, 著者Hatzidimitriou, D.1, 著者Hauser, M.1, 著者Haywood, M.1, 著者Heiter, U.1, 著者Helmi, A.1, 著者Heu, J.1, 著者Hilger, T.1, 著者Hobbs, D.1, 著者Hofmann, W.1, 著者Holland, G.1, 著者Huckle, H. E.1, 著者Hypki, A.1, 著者Icardi, V.1, 著者Janßen, K.1, 著者Jevardat de Fombelle, G.1, 著者Jonker, P. G.1, 著者Juhász, Á. L.1, 著者Julbe, F.1, 著者Karampelas, A.1, 著者Kewley, A.1, 著者Klar, J.1, 著者Kochoska, A.1, 著者Kohley, R.1, 著者Kolenberg, K.1, 著者Kontizas, M.1, 著者Kontizas, E.1, 著者Koposov, S. E.1, 著者Kordopatis, G.1, 著者Kostrzewa-Rutkowska, Z.1, 著者Koubsky, P.1, 著者Lambert, S.1, 著者Lanza, A. F.1, 著者Lasne, Y.1, 著者Lavigne, J. -B.1, 著者Le Fustec, Y.1, 著者Le Poncin-Lafitte, C.1, 著者Lebreton, Y.1, 著者Leccia, S.1, 著者Leclerc, N.1, 著者Lecoeur-Taibi, I.1, 著者Lenhardt, H.1, 著者Leroux, F.1, 著者Liao, S.1, 著者Licata, E.1, 著者Lindstrøm, H. E. P.1, 著者Lister, T. A.1, 著者Livanou, E.1, 著者Lobel, A.1, 著者López, M.1, 著者Managau, S.1, 著者Mann, R. G.1, 著者Mantelet, G.1, 著者Marchal, O.1, 著者Marchant, J. M.1, 著者Marconi, M.1, 著者Marinoni, S.1, 著者Marschalkó, G.1, 著者Marshall, D. J.1, 著者Martino, M.1, 著者Marton, G.1, 著者Mary, N.1, 著者Massari, D.1, 著者Matijevič, G.1, 著者Mazeh, T.1, 著者McMillan, P. J.1, 著者Messina, S.1, 著者Michalik, D.1, 著者Millar, N. R.1, 著者Molina, D.1, 著者Molinaro, R.1, 著者Molnár, L.1, 著者Montegriffo, P.1, 著者Mor, R.1, 著者Morbidelli, R.1, 著者Morel, T.1, 著者Morris, D.1, 著者Mulone, A. F.1, 著者Muraveva, T.1, 著者Musella, I.1, 著者Nelemans, G.1, 著者Nicastro, L.1, 著者Noval, L.1, 著者O'Mullane, W.1, 著者Ordénovic, C.1, 著者Ordóñez-Blanco, D.1, 著者Osborne, P.1, 著者Pagani, C.1, 著者Pagano, I.1, 著者Pailler, F.1, 著者Palacin, H.1, 著者Palaversa, L.1, 著者Panahi, A.1, 著者Pawlak, M.1, 著者Piersimoni, A. M.1, 著者Pineau, F. -X.1, 著者Plachy, E.1, 著者Plum, G.1, 著者Poggio, E.1, 著者Poujoulet, E.1, 著者Prša, A.1, 著者Pulone, L.1, 著者Racero, E.1, 著者Ragaini, S.1, 著者Rambaux, N.1, 著者Ramos-Lerate, M.1, 著者Regibo, S.1, 著者Reylé, C.1, 著者Riclet, F.1, 著者Ripepi, V.1, 著者Riva, A.1, 著者Rivard, A.1, 著者Rixon, G.1, 著者Roegiers, T.1, 著者Roelens, M.1, 著者Romero-Gómez, M.1, 著者Rowell, N.1, 著者Royer, F.1, 著者Ruiz-Dern, L.1, 著者Sadowski, G.1, 著者Sagristà Sellés, T.1, 著者Sahlmann, J.1, 著者Salgado, J.1, 著者Salguero, E.1, 著者Sanna, N.1, 著者Santana-Ros, T.1, 著者Sarasso, M.1, 著者Savietto, H.1, 著者Schultheis, M.1, 著者Sciacca, E.1, 著者Segol, M.1, 著者Segovia, J. C.1, 著者Ségransan, D.1, 著者Shih, I. -C.1, 著者Siltala, L.1, 著者Silva, A. F.1, 著者Smart, R. L.1, 著者Smith, K. W.1, 著者Solano, E.1, 著者Solitro, F.1, 著者Sordo, R.1, 著者Soria Nieto, S.1, 著者Souchay, J.1, 著者Spagna, A.1, 著者Spoto, F.1, 著者Stampa, U.1, 著者Steele, I. A.1, 著者Steidelmüller, H.1, 著者Stephenson, C. A.1, 著者Stoev, H.1, 著者Suess, F. F.1, 著者Surdej, J.1, 著者Szabados, L.1, 著者Szegedi-Elek, E.1, 著者Tapiador, D.1, 著者Taris, F.1, 著者Tauran, G.1, 著者Taylor, M. B.1, 著者Teixeira, R.1, 著者Terrett, D.1, 著者Teyssandier, P.1, 著者Thuillot, W.1, 著者Titarenko, A.1, 著者Torra Clotet, F.1, 著者Turon, C.1, 著者Ulla, A.1, 著者Utrilla, E.1, 著者Uzzi, S.1, 著者Vaillant, M.1, 著者Valentini, G.1, 著者Valette, V.1, 著者van Elteren, A.1, 著者Van Hemelryck, E.1, 著者Vaschetto, M.1, 著者Vecchiato, A.1, 著者Veljanoski, J.1, 著者Viala, Y.1, 著者Vicente, D.1, 著者Vogt, S.1, 著者von Essen, C.1, 著者Voss, H.1, 著者Votruba, V.1, 著者Voutsinas, S.1, 著者Walmsley, G.1, 著者Weiler, M.1, 著者Wertz, O.1, 著者Wevers, T.1, 著者Wyrzykowski, Ł.1, 著者Yoldas, A.1, 著者Žerjal, M.1, 著者Ziaeepour, H.1, 著者Zorec, J.1, 著者Zschocke, S.1, 著者Zucker, S.1, 著者Zurbach, C.1, 著者Zwitter, T.1, 著者 全て表示
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1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

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キーワード: parallaxes Hertzsprung-Russell and C-M diagrams solar neighborhood stars: evolution Astrophysics - Solar and Stellar Astrophysics Astrophysics - Astrophysics of Galaxies
 要旨: Context. Gaia Data Release 2 provides high-precision astrometry and three-band photometry for about 1.3 billion sources over the full sky. The precision, accuracy, and homogeneity of both astrometry and photometry are unprecedented.
Aims: We highlight the power of the Gaia DR2 in studying many fine structures of the Hertzsprung-Russell diagram (HRD). Gaia allows us to present many different HRDs, depending in particular on stellar population selections. We do not aim here for completeness in terms of types of stars or stellar evolutionary aspects. Instead, we have chosen several illustrative examples.
Methods: We describe some of the selections that can be made in Gaia DR2 to highlight the main structures of the Gaia HRDs. We select both field and cluster (open and globular) stars, compare the observations with previous classifications and with stellar evolutionary tracks, and we present variations of the Gaia HRD with age, metallicity, and kinematics. Late stages of stellar evolution such as hot subdwarfs, post-AGB stars, planetary nebulae, and white dwarfs are also analysed, as well as low-mass brown dwarf objects.
Results: The Gaia HRDs are unprecedented in both precision and coverage of the various Milky Way stellar populations and stellar evolutionary phases. Many fine structures of the HRDs are presented. The clear split of the white dwarf sequence into hydrogen and helium white dwarfs is presented for the first time in an HRD. The relation between kinematics and the HRD is nicely illustrated. Two different populations in a classical kinematic selection of the halo are unambiguously identified in the HRD. Membership and mean parameters for a selected list of open clusters are provided. They allow drawing very detailed cluster sequences, highlighting fine structures, and providing extremely precise empirical isochrones that will lead to more insight in stellar physics.
Conclusions: Gaia DR2 demonstrates the potential of combining precise astrometry and photometry for large samples for studies in stellar evolution and stellar population and opens an entire new area for HRD- based studies. The full Table A.1 is only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://cdsarc.u-strasbg.fr">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/616/A10">http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/616/A10</A>

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 日付: 2018
 出版の状態: 出版
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出版物名: Astronomy and Astrophysics
種別: 学術雑誌
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ページ: - 巻号: 616 通巻号: - 開始・終了ページ: - 識別子（ISBN, ISSN, DOIなど）: -