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dc.contributor.authorHobbs, D
dc.contributor.authorBrown, A
dc.contributor.authorHøg, E
dc.contributor.authorJordi, C
dc.contributor.authorKawata, D
dc.contributor.authorTanga, P
dc.contributor.authorKlioner, S
dc.contributor.authorSozzetti, A
dc.contributor.authorWyrzykowski, Ł
dc.contributor.authorWalton, N
dc.contributor.authorVallenari, A
dc.contributor.authorMakarov, V
dc.contributor.authorRybizki, J
dc.contributor.authorJiménez-Esteban, F
dc.contributor.authorCaballero, JA
dc.contributor.authorMcMillan, PJ
dc.contributor.authorSecrest, N
dc.contributor.authorMor, R
dc.contributor.authorAndrews, JJ
dc.contributor.authorZwitter, T
dc.contributor.authorChiappini, C
dc.contributor.authorFynbo, JPU
dc.contributor.authorTing, YS
dc.contributor.authorHestroffer, D
dc.contributor.authorLindegren, L
dc.contributor.authorMcArthur, B
dc.contributor.authorGouda, N
dc.contributor.authorMoore, A
dc.contributor.authorGonzalez, OA
dc.contributor.authorVaccari, M
dc.date.accessioned2021-10-22T15:51:11Z
dc.date.available2021-10-22T15:51:11Z
dc.date.issued2021
dc.date.submitted2020-07-24
dc.identifier.issn0922-6435
dc.identifier.others10686-021-09705-z
dc.identifier.other9705
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/329773
dc.description.abstract<jats:title>Abstract</jats:title><jats:p>The era of all-sky space astrometry began with the Hipparcos mission in 1989 and provided the first very accurate catalogue of apparent magnitudes, positions, parallaxes and proper motions of 120 000 bright stars at the milliarcsec (or milliarcsec per year) accuracy level. Hipparcos has now been superseded by the results of the Gaia mission. The second Gaia data release contained astrometric data for almost 1.7 billion sources with tens of microarcsec (or microarcsec per year) accuracy in a vast volume of the Milky Way and future data releases will further improve on this. Gaia has just completed its nominal 5-year mission (July 2019), but is expected to continue in operations for an extended period of an additional 5 years through to mid 2024. Its final catalogue to be released <jats:inline-formula><jats:alternatives><jats:tex-math>$\sim $</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math></jats:alternatives></jats:inline-formula> 2027, will provide astrometry for <jats:inline-formula><jats:alternatives><jats:tex-math>$\sim $</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math></jats:alternatives></jats:inline-formula> 2 billion sources, with astrometric precisions reaching 10 microarcsec. Why is accurate astrometry so important? The answer is that it provides fundamental data which underpin much of modern observational astronomy as will be detailed in this White Paper. All-sky visible and Near-InfraRed (NIR) astrometry with a wavelength cutoff in the K-band is not just focused on a single or small number of key science cases. Instead, it is extremely broad, answering key science questions in nearly every branch of astronomy while also providing a dense and accurate visible-NIR reference frame needed for future astronomy facilities.</jats:p>
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.subjectOriginal Article
dc.subjectSpace astrometry
dc.subjectGalactic dynamics
dc.subjectSpace mission
dc.subjectPhotometry
dc.subjectGaia
dc.titleAll-sky visible and near infrared space astrometry
dc.typeArticle
dc.date.updated2021-10-22T15:51:10Z
prism.endingPage843
prism.issueIdentifier3
prism.publicationNameExperimental Astronomy
prism.startingPage783
prism.volume51
dc.identifier.doi10.17863/CAM.77218
dcterms.dateAccepted2021-01-28
rioxxterms.versionofrecord10.1007/s10686-021-09705-z
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidHobbs, D [0000-0002-2696-1366]
dc.identifier.eissn1572-9508
pubs.funder-project-idSTFC (ST/T003081/1)
cam.issuedOnline2021-03-11


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