Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32262
DC Field | Value | Language |
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dc.contributor.author | Lindegren, L. | en_US |
dc.contributor.author | Klioner, S. A. | en_US |
dc.contributor.author | Hernández, J. | en_US |
dc.contributor.author | Bombrun, A. | en_US |
dc.contributor.author | Ramos-Lerate, M. | en_US |
dc.contributor.author | Steidelmüller, H. | en_US |
dc.contributor.author | Bastian, U. | en_US |
dc.contributor.author | Biermann, M. | en_US |
dc.contributor.author | de Torres, A. | en_US |
dc.contributor.author | Gerlach, E. | en_US |
dc.contributor.author | Geyer, R. | en_US |
dc.contributor.author | Hilger, T. | en_US |
dc.contributor.author | Hobbs, D. | en_US |
dc.contributor.author | Lammers, U. | en_US |
dc.contributor.author | McMillan, P. J. | en_US |
dc.contributor.author | Stephenson, C. A. | en_US |
dc.contributor.author | Castañeda, J. | en_US |
dc.contributor.author | Davidson, M. | en_US |
dc.contributor.author | Fabricius, C. | en_US |
dc.contributor.author | Gracia-Abril, G. | en_US |
dc.contributor.author | Portell, J. | en_US |
dc.contributor.author | Rowell, N. | en_US |
dc.contributor.author | Teyssier, D. | en_US |
dc.contributor.author | Torra, F. | en_US |
dc.contributor.author | Bartolomé, S. | en_US |
dc.contributor.author | Clotet, M. | en_US |
dc.contributor.author | Garralda, N. | en_US |
dc.contributor.author | González-Vidal, J. J. | en_US |
dc.contributor.author | Torra, J. | en_US |
dc.contributor.author | ABBAS, Ummi | en_US |
dc.contributor.author | Altmann, M. | en_US |
dc.contributor.author | Anglada Varela, E. | en_US |
dc.contributor.author | Balaguer-Núñez, L. | en_US |
dc.contributor.author | Balog, Z. | en_US |
dc.contributor.author | Barache, C. | en_US |
dc.contributor.author | Becciani, U. | en_US |
dc.contributor.author | Bernet, M. | en_US |
dc.contributor.author | Bertone, S. | en_US |
dc.contributor.author | Bianchi, L. | en_US |
dc.contributor.author | Bouquillon, S. | en_US |
dc.contributor.author | Brown, A. G. A. | en_US |
dc.contributor.author | Bucciarelli, B. | en_US |
dc.contributor.author | Busonero, D. | en_US |
dc.contributor.author | Butkevich, A. G. | en_US |
dc.contributor.author | Buzzi, R. | en_US |
dc.contributor.author | Cancelliere, R. | en_US |
dc.contributor.author | Carlucci, T. | en_US |
dc.contributor.author | Charlot, P. | en_US |
dc.contributor.author | Cioni, M. -R. L. | en_US |
dc.contributor.author | CROSTA, Mariateresa | en_US |
dc.contributor.author | Crowley, C. | en_US |
dc.contributor.author | del Peloso, E. F. | en_US |
dc.contributor.author | del Pozo, E. | en_US |
dc.contributor.author | DRIMMEL, Ronald | en_US |
dc.contributor.author | Esquej, P. | en_US |
dc.contributor.author | Fienga, A. | en_US |
dc.contributor.author | Fraile, E. | en_US |
dc.contributor.author | GAI, Mario | en_US |
dc.contributor.author | Garcia-Reinaldos, M. | en_US |
dc.contributor.author | Guerra, R. | en_US |
dc.contributor.author | Hambly, N. C. | en_US |
dc.contributor.author | Hauser, M. | en_US |
dc.contributor.author | Janßen, K. | en_US |
dc.contributor.author | Jordan, S. | en_US |
dc.contributor.author | Kostrzewa-Rutkowska, Z. | en_US |
dc.contributor.author | Lattanzi, M. G. | en_US |
dc.contributor.author | Liao, S. | en_US |
dc.contributor.author | Licata, E. | en_US |
dc.contributor.author | Lister, T. A. | en_US |
dc.contributor.author | Löffler, W. | en_US |
dc.contributor.author | Marchant, J. M. | en_US |
dc.contributor.author | Masip, A. | en_US |
dc.contributor.author | Mignard, F. | en_US |
dc.contributor.author | Mints, A. | en_US |
dc.contributor.author | Molina, D. | en_US |
dc.contributor.author | Mora, A. | en_US |
dc.contributor.author | Morbidelli, R. | en_US |
dc.contributor.author | Murphy, C. P. | en_US |
dc.contributor.author | Pagani, C. | en_US |
dc.contributor.author | Panuzzo, P. | en_US |
dc.contributor.author | Peñalosa Esteller, X. | en_US |
dc.contributor.author | Poggio, E. | en_US |
dc.contributor.author | Re Fiorentin, P. | en_US |
dc.contributor.author | Riva, A. | en_US |
dc.contributor.author | Sagristà Sellés, A. | en_US |
dc.contributor.author | Sanchez Gimenez, V. | en_US |
dc.contributor.author | Sarasso, M. | en_US |
dc.contributor.author | Sciacca, E. | en_US |
dc.contributor.author | Siddiqui, H. I. | en_US |
dc.contributor.author | SMART, Richard Laurence | en_US |
dc.contributor.author | Souami, D. | en_US |
dc.contributor.author | Spagna, A. | en_US |
dc.contributor.author | Steele, I. A. | en_US |
dc.contributor.author | Taris, F. | en_US |
dc.contributor.author | Utrilla, E. | en_US |
dc.contributor.author | van Reeven, W. | en_US |
dc.contributor.author | Vecchiato, A. | en_US |
dc.date.accessioned | 2022-06-10T09:03:17Z | - |
dc.date.available | 2022-06-10T09:03:17Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32262 | - |
dc.description.abstract | Context. Gaia Early Data Release 3 (Gaia EDR3) contains results for 1.812 billion sources in the magnitude range G = 3-21 based on observations collected by the European Space Agency Gaia satellite during the first 34 months of its operational phase. <BR /> Aims: We describe the input data, the models, and the processing used for the astrometric content of Gaia EDR3, as well as the validation of these results performed within the astrometry task. <BR /> Methods: The processing broadly followed the same procedures as for Gaia DR2, but with significant improvements to the modelling of observations. For the first time in the Gaia data processing, colour-dependent calibrations of the line- and point-spread functions have been used for sources with well-determined colours from DR2. In the astrometric processing these sources obtained five-parameter solutions, whereas other sources were processed using a special calibration that allowed a pseudocolour to be estimated as the sixth astrometric parameter. Compared with DR2, the astrometric calibration models have been extended, and the spin-related distortion model includes a self-consistent determination of basic-angle variations, improving the global parallax zero point. <BR /> Results: Gaia EDR3 gives full astrometric data (positions at epoch J2016.0, parallaxes, and proper motions) for 1.468 billion sources (585 millionwith five-parameter solutions, 882 million with six parameters), and mean positions at J2016.0 for an additional 344 million.Solutions with five parameters are generally more accurate than six-parameter solutions, and are available for 93% of the sources brighter than the 17th magnitude. The median uncertainty in parallax and annual proper motion is 0.02-0.03 mas at magnitude G = 9-14, and around 0.5 mas at G = 20. Extensive characterisation of the statistical properties of the solutions is provided, including the estimated angular power spectrum of parallax bias from the quasars. | en_US |
dc.language.iso | eng | en_US |
dc.title | Gaia Early Data Release 3. The astrometric solution | en_US |
dc.identifier.doi | 10.1051/0004-6361/202039709 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2021/05/aa39709-20/aa39709-20.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 649 | en_US |
dc.relation.firstpage | A2 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.identifier.adsbibcode | 2021A&A...649A...2L | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
local.message.claim | 2023-02-06T17:40:28.096+0100|||rp09467|||submit_approve|||dc_contributor_author|||None | * |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.orcid | 0000-0002-5076-766X | - |
crisitem.author.orcid | 0000-0003-4369-3786 | - |
crisitem.author.orcid | 0000-0002-1777-5502 | - |
crisitem.author.orcid | 0000-0001-9008-134X | - |
crisitem.author.orcid | 0000-0002-4424-4766 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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File | Description | Size | Format | |
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Lindegren_etal_2021_compressed.pdf | PDF editoriale | 3.19 MB | Adobe PDF | View/Open |
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