Accès ouvert déclaré 2018 article

Gaia Data Release 2

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

885Citations signalées, ce qui n’est pas une note de qualité

131Institutions déclarées

26Pays d’affiliation déclarés

Rattachement africain : fr, gb, es, it, nl, de, ch, se, be, gr, us, pt, at, fi, cl, Algérie, br, il, ie, pl, hu, si, cz, cn, dk, au. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

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.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.

Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.

Titre Crossref: <i>Gaia</i> Data Release 2
Date Crossref: 01/08/2018
Éditeur: EDP Sciences
Type: journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

Centre National de la Recherche Scientifique Université Paris Sciences et Lettres Observatoire de Paris Galaxies, Etoiles, Physique et Instrumentation Institut de Planétologie et d'Astrophysique de Grenoble Université Grenoble Alpes University of Cambridge University of Leicester Universitat de Barcelona Osservatorio Astronomico di Padova Scuola Internazionale Superiore di Studi Avanzati Leiden University European Space Research and Technology Centre Max Planck Institute for Astronomy Heidelberg University University of Geneva Technische Universität Dresden European Space Astronomy Centre Lund University Université Côte d'Azur Observatoire de la Côte d’Azur Centre National d'Études Spatiales Université Libre de Bruxelles Fund for Scientific Research Arcetri Astrophysical Observatory Université de Bordeaux Laboratoire d'Astrophysique de Bordeaux University College London Osservatorio Astrofisico di Torino Osservatorio di Astrofisica e Scienza dello Spazio Sorbonne Université Systèmes de Référence Temps-Espace National Observatory of Athens Université de Lille Institut de Mécanique Céleste et de Calcul des Éphémérides Royal Observatory of Belgium Royal Observatory University of Edinburgh KU Leuven University of Liège Universidad Pablo de Olavide Universidade de Vigo Large Synoptic Survey Telescope Corporation Observatoire astronomique de Strasbourg Université de Strasbourg Université de Montpellier Laboratoire Univers et Particules de Montpellier Uppsala University University of Lisbon Osservatorio Astrofisico di Catania University of Vienna Universidade da Coruña Astronomical Observatory of Rome Agenzia Spaziale Italiana National Institute for Astrophysics University of Helsinki Finnish Geospatial Research Institute Ingeniería de Sistemas para la Defensa de España Université Bourgogne Franche-Comté Institut UTINAM Rutherford Appleton Laboratory Universidad Nacional de Educación a Distancia Deimos (Spain)Thales (France)Radboud University Nijmegen European Southern Observatory Carnegie Institution for Science University of Turin Centro de Astrobiología Universidad de Cádiz University of Bern Eurix (Italy)Center for Astrophysics Harvard & Smithsonian University of Groningen Space Research Organisation Netherlands Universidad de Cantabria Universidad de Antofagasta Centre de Recherche en Astronomie Astrophysique et Géophysique University of Antwerp Collurania Teramo Observatory Astronomical Observatory of Capodimonte Universidade de São Paulo National and Kapodistrian University of Athens Leibniz Institute for Astrophysics Potsdam Tel Aviv University Uninova University College Dublin University of Bologna Barcelona Supercomputing Center Universitat Politècnica de Catalunya Luleå University of Technology Max Planck Institute for Extraterrestrial Physics Adam Mickiewicz University in Poznań Eötvös Loránd University Konkoly Observatory HUN-REN Research Centre for Astronomy and Earth Sciences Hungarian Academy of Sciences American Community Schools University of Ljubljana Villanova University Carnegie Mellon University Czech Academy of Sciences, Astronomical Institute Institut de Physique de Rennes Université de Rennes Shanghai Astronomical Observatory University of Chinese Academy of Sciences University of Copenhagen DXC Technology (Denmark)Las Cumbres Observatory Global Telescope Network Liverpool John Moores University University of Szeged Délégation Paris 7 Université Paris Cité Commissariat à l'Énergie Atomique et aux Énergies Alternatives Astrophysique, Instrumentation et Modélisation CEA Paris-Saclay Institut de Recherche sur les Lois Fondamentales de l'Univers Charles University University of Warsaw HE Space (Netherlands)Space Telescope Science Institute Nordic Optical Telescope Virtualware Group (Spain)Telescopio Nazionale Galileo Universidad Complutense de Madrid University of Bristol Institut d'Estudis Espacials de Catalunya Aarhus University University of Bonn Australian National University Institut d'Astrophysique de Paris

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Stellar, planetary, and galactic studiesAstronomy and Astrophysical ResearchAstro and Planetary Science

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