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Record W3124986913 · doi:10.1051/0004-6361/201730552

<i>Gaia</i> Data Release 1

2017· article· en· W3124986913 on OpenAlexaff
F. van Leeuwen, A. Vallenari, C. Jordi, L. Lindegren, U. Bastian, T. Prusti, J. H. J. de Bruijne, A. G. A. Brown, C. Babusiaux, C. A. L. Bailer-Jones, M. Biermann, D. W. Evans, L. Eyer, F. Jansen, S. A. Klioner, U. Lammers, X. Luri, F. Mignard, C. Panem, D. Pourbaix, S. Randich, P. Sartoretti, H. I. Siddiqui, C. Soubiran, V. Valette, N. A. Walton, C. Aerts, F. Arenou, M. Cropper, R. Drimmel, E. Høg, D. Katz, M. G. Lattanzi, William O’Mullane, E. K. Grebel, Andrew D. Holland, C. Huc, X. Passot, M. A. C. Perryman, L. Bramante, C. Cacciari, J. Castañeda, L. Chaoul, N. Cheek, F. De Angeli, C. Fabricius, R. Guerra, J. Hernández, A. Jean-Antoine-Piccolo, E. Masana, R. Messineo, N. Mowlavï, K. Nienartowicz, D. Ordóñez-Blanco, P. Panuzzo, J. Portell, P. J. Richards, M. Riello, G. M. Seabroke, P. Tanga, F. Thévenin, J. Torra, S. Els, G. Gracia-Abril, G. Comoretto, M. Garcia-Reinaldos, T. Lock, Emma Mercier, M. Altmann, R. Andrae, T. L. Astraatmadja, I. Bellas-Velidis, K. Benson, J. Berthier, R. Blomme, G. Busso, B. Carry, A. Cellino, G. Clementini, S. Cowell, O. L. Creevey, J. Cuypers, M. Davidson, J. De Ridder, A. de Torres, L. Delchambre, A. Dell’Oro, C. Ducourant, Y. Frémat, Miguel García-Torres, E. Gosset, J. L. Halbwachs, N. C. Hambly, D. L. Harrison, M. Häuser, Daniel Hestroffer, S. T. Hodgkin, H. E. Huckle, A. Hutton, G. Jasniewicz, S. Jordan, M. Kontizas, A. J. Korn, A. C. Lanzafame, M. Manteiga, A. Moitinho, K. Muinonen, J. Osinde, E. Pancino, T. Pauwels, Jean-Marc Petit, A. Recio–Blanco, A. C. Robin, L. M. Sarro, C. Siopis, M. C. Smith, K. W. Smith, A. Sozzetti, W. Thuillot, W. van Reeven, Y. Viala, U. Abbas, A. Abreu Aramburu, S. Accart, J. J. Aguado, P. M. Allan, Walter Allasia, G. Altavilla, M. A. Álvarez, J. Alves, Richard I. Anderson, A. H. Andrei, E. Anglada Varela, E. Antiche, T. Antoja, Sonia Antón, B. Arcay, N. Bach, Steven G. Baker, L. Balaguer-Núñez, C. Barache, Carlos Barata, A. Barbier, F. Barblan, D. Barrado, M. Barros, M. A. Barstow, U. Becciani, M. Bellazzini, A. Bello-García, Vasily Belokurov, Philippe Bendjoya, Á. Berihuete, L. Bianchi, O. Bienaymé, F. Billebaud, N. Blagorodnova, S. Blanco-Cuaresma, T. Boch, A. Bombrun, R. Borrachero, S. Bouquillon, G. Bourda, H. Bouy, A. Bragaglia, M. A. Breddels, N. Brouillet, Thomas Brüsemeister, B. Bucciarelli, P. W. Burgess, Ross Burgon, Alexandru Burlacu, D. Busonero, R. Buzzi, E. Caffau, Joan Cambras, H. Campbell, R. Cancelliere, T. Cantat-Gaudin, T. Carlucci, J. M. Carrasco, M. Castellani, P. Charlot, J. Charnas, A. Chiavassa, M. Clotet, G. Cocozza, R. S. Collins, G. Costigan, F. Crifo, N. J. G. Cross, M. Crosta, C. Crowley, Carlos Dafonte, Y. Damerdji, A. Dapergolas, Pedro David, M. David, P. De Cat, F. de Felice, P. de Laverny, F. De Luise, R. De March, D. de Martino, R. de Souza, J. Debosscher, E. del Pozo, Marco Delbò, A. Delgado, H. E. Delgado, P. Di Matteo, S. Diakité, E. Distefano, S. Dos Anjos, P. Drazinos, J. Durán, Yifat Dzigan, B. Edvardsson, H. Enke, N. W. Evans, G. Eynard Bontemps, C. Fabre, M. Fabrizio, S. Faigler, A. J. Falcão, Marc Casas, L. Federici, G. Fedorets, J. Fernández-Hernández, P. Fernique, A. Fienga, F. Figueras, Francesco Maria De Filippi, K. Findeisen, A. Fonti, M. Fouesneau, E. Fraile, M. Fraser, J. Fuchs, M. Gai, S. Galleti, L. Galluccio, D. Garabato, F. García-Sedano, A. Garofalo, N. Garralda, P. Gavras, J. Gerssen, R. Geyer, G. Gilmore, S. Girona, G. Giuffrida, M. Gomes, Ana González‐Marcos, J. González-Núñez, J. J. González-Vidal, Mikael Granvik, A. Guerrier, P. Guillout, J. Guiraud, A. Gúrpide, R. Gutiérrez–Sánchez, L. P. Guy, R. Haigron, D. Hatzidimitriou, M. Haywood, U. Heiter, A. Helmi, D. Hobbs, Wilfried Hofmann, B. Holl, G. Holland, John Douglas Hunt, Arkadiusz Hypki, V. Icardi, M. Irwin, G. Jévardat de Fombelle, P. Jofré, P. G. Jonker, A. Jorissen, F. Julbé, A. Karampelas, A. Kochoska, R. Kohley, K. Kolenberg, E. Kontizas, S. E. Koposov, G. Kordopatis, P. Koubský, A. Krone-Martins, M. Kudryashova, Ilya Kull, R. K. Bachchan, F. Lacoste-Seris, A. F. Lanza, J.-B. Lavigne, C. Le Poncin-Lafitte, Y. Lebreton, T. Lebzelter, S. Leccia, N. Leclerc, V. Lemaı̂tre, H. Lenhardt, F. Leroux, S. Liao, E. Licata, H. E. P. Lindstrøm, Tim Lister, E. Livanou, A. Lobel, W. Löffler, M. López, D. Lorenz, I. MacDonald, Tony Fernandes, S. Managau, R. G. Mann, G. Mantelet, O. Marchal, J. M. Marchant, M. Marconi, S. Marinoni, P. M. Marrese, G. Marschalkó, David J. Marshall, J. M. Martín-Fleitas, M. Martino, Nicolas Mary, G. Matijevič, T. Mazeh, P. J. McMillan, S. Messina, D. Michalik, N. R. Millar, B. M. H. Miranda, D. Molina, R. Molinaro, M. Molinaro, L. Molnár, M. Moniez, P. Montegriffo, R. Mor, A. Mora, R. Morbidelli, T. Morel, Simon Morgenthaler, D. Morris, A. F. Mulone, T. Muraveva, I. Musella, J. Narbonne, G. Nelemans, L. Nicastro, L. Noval, C. Ordénovic, Joaquín Ordieres‐Meré, P. Osborne, C. Pagani, I. Pagano, F. Pailler, H. Palacin, L. Palaversa, Paul Parsons, Marco Pecoraro, R. Pedrosa, Hanna Pentikäinen, Bruno Pichon, A. M. Piersimoni, F.‐X. Pineau, E. Plachy, G. Plum, E. Poujoulet, A. Prša, L. Pulone, S. Ragaini, S. Rago, Nicolas Rambaux, M. Ramos-Lerate, P. Ranalli, G. Rauw, A. Read, S. Regibo, C. Reylé, Rita A. Ribeiro, L. Rimoldini, V. Ripepi, A. Riva, G. Rixon, M. Roelens, M. Romero-Gómez, N. Rowell, F. Royer, L. Ruiz-Dern, G. Sadowski, A. Sagristà Sellés, J. Sahlmann, J. Salgado, E. Salguero, M. Sarasso, H. Savietto, M. Schultheis, ‬‬‬‬‬‬Eva Sciacca, M. Segol, José C. Segovia, D. Ségransan, I.-C. Shih, R. Smareglia, R. L. Smart, 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, M. Süveges, Jean Surdej, L. Szabados, E. Szegedi-Elek, D. Tapiador, F. Taris, G. Tauran, Mark Taylor, R. Teixeira, D. Terrett, B. Tingley, S. C. Trager, C. Turon, A. Ulla, E. Utrilla, G. Valentini, A. van Elteren, E. Van Hemelryck, M. vanLeeuwen, Mihály Váradi, Alberto Vecchiato, J. Veljanoski, T. Via, D. Vicente, Steven S. Vogt, H. Voss, V. Votruba, S. Voutsinas, G. Walmsley, M. Weiler, K. Weingrill, T. Wevers, Ł. Wyrzykowski, A. Yoldas, M. Žerjal, S. Zucker, C. Zurbach, T. Zwitter, A. Alecu, M. Allen, C. Allende Prieto, A. Amorim, G. Anglada‐Escudé, V. Arsenijevic, S. Azaz, P.H.M. Balm, Mélanie Beck, H.-H. Bernstein, Lionel Bigot, A. Bijaoui, C. Blasco, M. Bonfigli, G. Bono, S. Boudreault, A. Bressan, Shannon Brown, Pere Brunet, P. Bunclark, R. Buonanno, A. G. Butkevich, C. Carret, C. Carrion, L. Chemin, F. Chéreau, L. Corcione, E. Darmigny, K. S. de Boer, P. de Teodoro, P. T. de Zeeuw, Claire Delle Luche, Catherine Dominguès, P. Dubath, F. Fodor, B. Frézouls, A. Fries, Diego Fustes, D. Fyfe, E. Gallardo, J. Gallegos, D. Gardiol, M. Gebran, A. Gomboc, A. Gómez, E. Grux, A. Guéguen, A. Heyrovsky, G. Iannicola, Y. Isasi Parache, A.-M. Janotto, E. Joliet, A. Jonckheere, R. Keil, Dae Won Kim, P. Klagyivik, Jochen Klar, J. Knude, O. Kochukhov, И. Колка, J. Kos, A. Kutka, V. Lainey, D. Lebouquin, Chao Liu, D. Loreggia, В. В. Макаров, M. G. Marseille, Christophe Martayan, O. Martinez-Rubi, B. Massart, Frédéric Meynadier, Shan Mignot, U. Munari, A.-T. Nguyen, Thomas Nordlander, K. S. O’Flaherty, Pierre Ocvirk, A. Olias Sanz, P. Ortiz, J. Osorio, Dagmara Oszkiewicz, A. Ouzounis, M. Palmer, P. Park, E. Pasquato, C. Peltzer, J. Peralta, F. Péturaud, T. Pieniluoma, E. Pigozzi, J. Poels, G. Prat, T. Prod’homme, F. Raison, José M. Rebordão, D. Rísquez, B. Rocca‐Volmerange, S. R. Rosen, M. I. Ruiz-Fuertes, F. Russo, S. Sembay, I. Serraller Vizcaino, A. Short, A. Siebert, H. Silva, D. Sinachopoulos, E. Slezak, M. Söffel, D. Sosnowska, V. Straižys, Maya Linden, D. Terrell, Stephan Theil, C. Tiede, L. Troisi, P. Tsalmantza, D. Tur, M. Vaccari, F. Vachier, Pola Valles, W. Van Hamme, L. Veltz, Jenni Virtanen, J.-M. Wallut, R. Wichmann, M. I. Wilkinson, H. Ziaeepour, S. Zschocke

Bibliographic record

VenueAstronomy and Astrophysics · 2017
Typearticle
Languageen
FieldPhysics and Astronomy
TopicStellar, planetary, and galactic studies
Canadian institutionsUniversity of TorontoToronto Metropolitan University
FundersEuropean Social FundInstituto de Astrofísica de CanariasUniversidade de VigoCentre National de la Recherche ScientifiqueCentre National d’Etudes SpatialesUniversidad Complutense de MadridAustrian Science FundUniversidad Politécnica de MadridAcademy of FinlandUniversité Paris-SudFundação de Amparo à Pesquisa do Estado de São PauloCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorNational Natural Science Foundation of ChinaÉcole Polytechnique Fédérale de LausanneAgence Nationale de la RechercheMagnus Ehrnroothin SäätiöEuropean Science FoundationBelgian Federal Science Policy OfficeNational Science FoundationFP7 SpaceVillanova UniversityEuropean Space AgencyInstitut National de Physique Nucléaire et de Physique des ParticulesUniversité Paris-SaclayAarhus UniversitetEuropean CommissionUniversidad de La LagunaStellar Astrophysics CentreUniversity of BristolScuola Internazionale Superiore di Studi AvanzatiIndian National Science Academy
KeywordsParallaxPhysicsProper motionAstrometryPleiadesOpen clusterAstrophysicsPhotometry (optics)StarsCluster (spacecraft)Context (archaeology)AstronomyComputer science

Abstract

fetched live from OpenAlex

Context. The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS). This is a subset of about 2 million stars for which, besides the position and photometry, the proper motion and parallax are calculated using Hipparcos and Tycho-2 positions in 1991.25 as prior information. Aims. We investigate the scientific potential and limitations of the TGAS component by means of the astrometric data for open clusters. Methods. Mean cluster parallax and proper motion values are derived taking into account the error correlations within the astrometric solutions for individual stars, an estimate of the internal velocity dispersion in the cluster, and, where relevant, the effects of the depth of the cluster along the line of sight. Internal consistency of the TGAS data is assessed. Results. Values given for standard uncertainties are still inaccurate and may lead to unrealistic unit-weight standard deviations of least squares solutions for cluster parameters. Reconstructed mean cluster parallax and proper motion values are generally in very good agreement with earlier Hipparcos-based determination, although the Gaia mean parallax for the Pleiades is a significant exception. We have no current explanation for that discrepancy. Most clusters are observed to extend to nearly 15 pc from the cluster centre, and it will be up to future Gaia releases to establish whether those potential cluster-member stars are still dynamically bound to the clusters. Conclusions. The Gaia DR1 provides the means to examine open clusters far beyond their more easily visible cores, and can provide membership assessments based on proper motions and parallaxes. A combined HR diagram shows the same features as observed before using the Hipparcos data, with clearly increased luminosities for older A and F dwarfs.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.005
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Dataset · Consensus signal: Dataset
Teacher disagreement score0.052
Threshold uncertainty score0.103

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.005
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0040.006
Science and technology studies0.0010.000
Scholarly communication0.0020.001
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0250.039

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.021
GPT teacher head0.239
Teacher spread0.218 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreDataset

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

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Citations101
Published2017
Admission routes1
Has abstractyes

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