Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/140537
Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Gaia Collaboration | - |
dc.contributor.author | Luri Carrascoso, Xavier | - |
dc.contributor.author | Cantat Gaudin, Tristan | - |
dc.contributor.author | Fabricius, Claus | - |
dc.contributor.author | Jordi i Nebot, Carme | - |
dc.contributor.author | Soria Nieto, Sergio | - |
dc.contributor.author | Romero Gómez, Mercè | - |
dc.contributor.author | Antoja Castelltort, M. Teresa | - |
dc.date.accessioned | 2019-09-19T13:37:05Z | - |
dc.date.available | 2019-09-19T13:37:05Z | - |
dc.date.issued | 2018-08-20 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.uri | http://hdl.handle.net/2445/140537 | - |
dc.description.abstract | The second Gaia data release (DR2), contains very precise astrometric and photometric properties for more than one billion sources, astrophysical parameters for dozens of millions, radial velocities for millions, variability information for half a million of stellar sources and orbits for thousands of solar system objects. Before the Catalogue publication, these data have undergone dedicated validation processes. The goal of this paper is to describe the validation results in terms of completeness, accuracy and precision of the various Gaia DR2 data. The validation processes include a systematic analysis of the Catalogue content to detect anomalies, either individual errors or statistical properties, using statistical analysis, and comparisons to external data or to models. Although the astrometric, photometric and spectroscopic data are of unprecedented quality and quantity, it is shown that the data cannot be used without a dedicated attention to the limitations described here, in the Catalogue documentation and in accompanying papers. A particular emphasis is put on the caveats for the statistical use of the data in scientific exploitation. | - |
dc.format.extent | 29 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | EDP Sciences | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/201833234 | - |
dc.relation.ispartof | Astronomy & Astrophysics, 2018, vol. 616, num. A17 | - |
dc.relation.uri | https://doi.org/10.1051/0004-6361/201833234 | - |
dc.rights | (c) The European Southern Observatory (ESO), 2018 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Astrometria | - |
dc.subject.classification | Catàlegs d'estels | - |
dc.subject.classification | Estels | - |
dc.subject.classification | Asteroides | - |
dc.subject.other | Astrometry | - |
dc.subject.other | Star catalogs | - |
dc.subject.other | Stars | - |
dc.subject.other | Asteroids | - |
dc.title | Gaia Data Release 2: Catalogue validation | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 680300 | - |
dc.date.updated | 2019-09-19T13:37:05Z | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/606740/EU//GENIUS | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Publicacions de projectes de recerca finançats per la UE Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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680300.pdf | 7.84 MB | Adobe PDF | View/Open |
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