Site Map
Contacts
Follow us on Facebook Follow us on Twitter YouTube channel
Centro de Astrofísica da Universidade do Porto

The Gaia mission

T. Prusti, J. de Bruijne, A. G. A. Brown, A. Vallenari, C. Babusiaux, C. A. L. Bailer-Jones, U. Bastian, M. Biermann, D. W. Evans, L. Eyer, F. Jansen, C. Jordi, S. Klioner, U. Lammers, L. Lindegren, X. Luri, F. Mignard, D. J. Milligan, C. Panem, V. Poinsignon, D. Pourbaix, S. Randich, G. Sarri, P. Sartoretti, H. Siddiqui, C. Soubiran, V. Valette, Leeuwen, N. A. Walton, C. Aerts, F. Arenou, M. Cropper, Drimmel R., D. Katz, M. Lattanzi, E. K. Grebel, A.D. Holland, C. Huc, X. Passot, L. Bramant, C. Cacciari, L. Chaoul, N. Cheek, F de Angeli, C. Fabricius, R. Guerra, A. Jean-Antoine-Piccolo, E. Masana, R. Messineo, N. Mowlavi, K. Nienartowicz, P. Panuzzo, J. Portell, P. J. Richards, M. Riello, G. M. Seabroke, P. Tanga, J. Torra, Els. S. G., G. Gracia-Abril, G. Comoretto, M. Garcia-Reinaldos, T. Lock, E. 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. Ridder, A. de Torres, L. Delchambre, C. Ducourant, E. Gosset, J. L. Halbwachs, N. Hambly, D. L. Harrison, M. Hauser, D. Hestroffer, S. T. Hodgkin, H. E. Huckle, A. Hutton, G. Jasniewicz, S. Jordaa, A. J. Korn, A. C. Lanzafame, M. Manteiga, A. Moitinho, K. Muinonen, J. Osinde, E. Pancino, T. Pauwels, J.-M. Petit, A. Recio-Blanco, A. C. Robin, L. Sarro, C. Siopis, M. Smith, K. W. Smith, A. Sozzetti, W. Thuillot, W. van Reeven, Y. Viala, U. Abbas, A. A Aramburu, S. Accart, J. J. Aguado, P. M. Allan, W. Allasia, G. Altavilla, M. Alvarez, J. Alves, R. I. Anderson, a. Andrei, E. A. Varela, E. Antiche, T. Antoja, B. Arcay, A. Atzei, L. Ayache, N. Bach, S. G. Baker, C. Barache, C. Barata, A. Barbier, F. Barblan, M. Baroni, M. Barros, M. A. Barstow, U. Becciani, M. Bellazzini, G. Bellei, V. Belokurov, P. Bendjoya, A. Berihuete, L. Bianchi, O. Bienayme, 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, B. Bucciarelli, F. Budnik, P. Burgess, R. Burgon, A. Burlacu, D. Busonero, R. Buzzi, E. Caffau, J. Cambras, H. Campbell, R. Cancelliere, T. Cantat-Gaudin, T. Carlucci, J. M. Carrasco, M. Castellani, P. Charlot, J. Charnas, P. Charvet, F. Chassat, A. Chiavassa, M. Clotet, G. Cocozza, R. S. Collins, P. Collins, G. Costigan, F. Crifo , N. J. G. Cross, M. Crosta, C. Crowley, C. Dafonte, Y. Damerdji, A. Dapergolas, P. 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, M. Delbo, A. J. Delgado, H. E. Delgado, S. Diakite, E. Distefano, C. Dolding, S. Anjos, P. Drazinos, J. Duran, Y. Dzigan, E. Ecale, B. Edvardsson, H. Enke, M. Erdmann, D. Escolar, M. Espina, N. W. Evans, G. E. Bontemps, C. Fabre, M Fabrizio, S. Faigler, F. Faye, L. Federici, G. Fedorets, P. Fernique, A. Fienga, F. Figueras, F. Filippi, K. Findeisen, A. Fonti, M. Fouesneau, M. Fraser, Fuchs,, R. Furnell, M. Gai, S. Galleti, L. Galluccio, D. Garabato, A. Garofalo, N. Garralda, P. Gavras, J. Gerssen, R. Geyer, G. Gilmore, S. Girona, G. Giuffrida, M. Gomes, J. J. Gonzalez-Vidal, M Granvik, A. Guerrier, P. Guillout, J. Guiraud, L. P. Guy, R. Haigron, D. Hatzidimitriou, U. Heiter, A. Helmi, D. Hobbs, W. Hofmann, B. Holl, G. Holland, J. A. S. Hunt, A. Hypki, V. Icardi, M. Irwin, G. Jevardat de Fombelle, P. G. Jonker, A. Jorissen, F. Julbe, A. Karampelas, A. Kochoska, R. Kohley, K. Kolenberg, M. Kontizas, S. Koposov, G. Kordopatis, P. Koubsky, A. Kowalczyk, A. Krone-Martins, M. Kudryashova, I. 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, I. Lecoeur-Taibi, V. Lemaitre, H Lenhardt, F. Leroux, S. Liao, E. Licata, T. Lister, E. Livanou, A. Lobel, M. Lopez, A. Lopez-Lozano, Lorenz,, T. Loureiro, I. MacDonald, T. Magalhães Fernandes, S. Managau, R. Mann, G. Mantelet, O. Marchal, J. Marchant, M. Marconi, J. Marie, S. Marinoni, P. M. Marrese, D. J. Marshall, M. Martino, N. Mary, T. Mazeh, P. J. McMillan, S. Messina, A. Mestre, D. Michalik, N. R. Millar, B. M. H. Miranda, D. Molina, R. Molinaro, M. Molinaro, M. Moniez, P. Montegriffo, D. Monteiro, R. Mor, A. Mora, R. Morbidelli, T. Morel, S. Morgenthaler, T. Morley, D. Morris, A. F. Mulone, T. Muraveva, I. Musella, J. Narbonne, G. Nelemans, L. Nicastro, L. Noval, P. Osborne, C. Pagani, I. Pagano, F. Pailler, H. Palacin, L. Palaversa, P. Parsons, T. Paulsen, M. Pecoraro, R. Pedrosa, J. Pereira, B. Pichon, A. M. Piersimoni, F. X. Pineau, E. Plachy, G. Plum, E. Poujoulet, L. Pulone, S. Ragaini, S. Rago, N. Rambaux, M. Ramos-Lerate, P. Ranalli, G. Rauw, A. Read, S. Regibo, F. Renk, R. A. Ribeiro, L. Rimoldini, V. Ripepi, A. Riva, G. Rixon, M. Roelens, N. Rowell, F. Royer, A. Rudolph, L. Ruiz-Dern, G. Sadowski, J. Sahlmann, J. Salgado, E. Salguero, M. Sarasso, H. Savietto, Schnorhk,A:, M. Schultheis, E. Sciacca, M. Segol, J. C. Segovia, D. Segransan, E. Serpell, I,-C. Shih, R. Smareglia, R. Smart, C. Smith, E. Solano, F. Solitro, R. Sordo, S. Soria Nieto, J. Souchay, Spagna, F. Spoto, U. Stampa, I. Steele, C. A. Stephenson, H. Stoev, F. F. Suess, J. Surdej, L. Szabados, E. Szegedi-Elek, D. Tapiador, F. Taris, M. B. 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. Varadi, A. Vecchiato, J. Veljanoski, T. Via, D. Vicente, S. Vogt, H. Voss, V. Votruba, S. Voutsinas, G. Walmsley, M. Weiler, K. Weingrill, D. Werner, T. Wevers, G. Whitehead, L. Wyrzykowski, A. Yoldas, S. Zucker, C. Zurbach, T. Zwitter, A. Alecu, M. Allen, C. A. Prieto, A. Amorim, G. Anglada-Escude, V. Arsenijevic, S. Azaz, P. Balm, H.-H. Bernstein, L. Bigot, A. Bijaoui, C. Blasco, M. Bonfigli, G. Bono, S. Boudreault, A. Bressan, S. D. Brown, P. Brunet, P. Bunclark, R. Buonanno, A. Butkevich, C. Carret, C. Carrion, L. Chemin, L. Corcione, E. Darmigny, K. S. de Boer, P. T. de Zeeuw, C. Delle Luche, C. D. Domingues, P. Dubath, F. Fodor, A. Fries, D. Fustes, D. Fyfe, E. Gallardo, J. Gallegos, D. Gardiol, M. Gebran, A. Gomboc, E. Grux, A. Gueguen, A. Heyrovsky, J. Hoar, G. Iannicola, Y. Isasi Parache, A.-M. Janotto, E. Joliet, A. Jonckheere, R. Keil, D.-W. Kim, P. Klagyivik, J. Klar, J. Knude, O. Kochukhov, I. Kolka, J. Kos, A. Kutka, V. Lainey, D. LeBouquin, C. Liu, D. Loreggia, V. V. Makarov, M. G. Marseille, C. Martayan, O. Martinez-Rubi, B. Massart, F. Meynadier, S. Mignot, U. Munari, A.-T. Nguyen, T. Nordlander, P. Ocvirk, K. S. O. Flaherty, A. Olias Sanz, P. Ortiz, J. Osorio, D. Oszkiewicz, A. Ouzounis, M. Palmer, P. Park, E. Pasquato, C. Peltzer, J. Peralta, T. Pieniluoma, E. Pigozzi, J. Poels, G. Prat, F. Raison, J. M. Rebordao, B. Rocca-Volmerange, S. Rosen, M. I. Ruiz-Fuertes, F. Russo, S. Sembay, I. Vizcaino, A. Short, A. Siebert, H. Silva, D. Sinachopoulos, E. Slezak, M. Soffel, M. ter Linden, D. Terrell, S. Theil, C. Tiede, L. Troisi, P. Tsalmantza, D. Tur, M. Vaccari, F. Vachier, P. Valles, W. van Hamme, L. Veltz, J. Virtanen, J.-M. Wallut, R. Wichmann, M. I. Wilkinson, H. Ziaeepour, S. Zschocke, E. Høg, J. Castañeda, J. Hernández, D. Ordóñez-Blanco, F. Thévenin, A, Dell’Oro, Y. Frémat, A. García-Torres, S. Antón, L. Balaguer-Núñez, A. Bello García, T. Brüsemeister, Z. Çelik, P. Jofré, W. Löffler, A. Prsa, Steidelmüller H., B. Frézouls, A. Gómez, F. Péturaud, T. Prod'homme, V. Strai¸ys,

Abstract
Gaia is a cornerstone mission in the science programme of the EuropeanSpace Agency (ESA). The spacecraft construction was approved in 2006, following a study in which the original interferometric concept was changed to a direct-imaging approach. Both the spacecraft and the payload were built by European industry. The involvement of the scientific community focusses on data processing for which the international Gaia Data Processing and Analysis Consortium (DPAC) was selected in 2007. Gaia was launched on 19 December 2013 and arrived at its operating point, the second Lagrange point of the Sun-Earth-Moon system, a few weeks later. The commissioning of the spacecraft and payload was completed on 19 July 2014. The nominal five-year mission started with four weeks of special, ecliptic-pole scanning and subsequently transferred into full-sky scanning mode. We recall the scientific goals of Gaia and give a description of the as-built spacecraft that is currently (mid-2016) being operated to achieve these goals. We pay special attention to the payload module, the performance of which is closely related to the scientific performance of the mission. We provide a summary of the commissioning activities and findings, followed by a description of the routine operational mode. We summarise scientific performance estimates on the basis of in-orbit operations. Several intermediate Gaia data releases are planned and the data can be retrieved from the Gaia Archive, which is available through the Gaia home page.http://www.cosmos.esa.int/gaia

Astronomy and Astrophysics
Volume 595
November 2016

>> DOI

Institute of Astrophysics and Space Sciences

Institute of Astrophysics and Space Sciences (IA) is a new but long anticipated research infrastructure with a national dimension. It embodies a bold but feasible vision for the development of Astronomy, Astrophysics and Space Sciences in Portugal, taking full advantage and fully realizing the potential created by the national membership of the European Space Agency (ESA) and the European Southern Observatory (ESO). IA resulted from the merging the two most prominent research units in the field in Portugal: the Centre for Astrophysics of the University of Porto (CAUP) and the Center for Astronomy and Astrophysics of the University of Lisbon (CAAUL). It currently hosts more than two-thirds of all active researchers working in Space Sciences in Portugal, and is responsible for an even greater fraction of the national productivity in international ISI journals in the area of Space Sciences. This is the scientific area with the highest relative impact factor (1.65 times above the international average) and the field with the highest average number of citations per article for Portugal.

Proceed on CAUP's website|Go to IA website