Gaia Data Release 2 - The astrometric solution

L. Lindegren; J. Hernández; A. Bombrun; S. Klioner; U. Bastian; M. Ramos-Lerate; A. de Torres; H. Steidelmüller; C. Stephenson; D. Hobbs; U. Lammers; M. Biermann; R. Geyer; T. Hilger; D. Michalik; U. Stampa; P.J. McMillan; J. Castañeda; M. Clotet; G. Comoretto; M. Davidson; C. Fabricius; G. Gracia; N.C. Hambly; A. Hutton; A. Mora; J. Portell; F. van Leeuwen; U. Abbas; A. Abreu; M. Altmann; A. Andrei; E. Anglada; L. Balaguer-Núñez; C. Barache; U. Becciani; S. Bertone; L. Bianchi; S. Bouquillon; G. Bourda; T. Brüsemeister; B. Bucciarelli; D. Busonero; R. Buzzi; R. Cancelliere; T. Carlucci; P. Charlot; N. Cheek; M. Crosta; C. Crowley; J. de Bruijne; F. de Felice; R. Drimmel; P. Esquej; A. Fienga; E. Fraile; M. Gai; N. Garralda; J.J. González-Vidal; R. Guerra; M. Hauser; W. Hofmann; B. Holl; S. Jordan; M.G. Lattanzi; H. Lenhardt; S. Liao; E. Licata; T. Lister; W. Löffler; J. Marchant; J.-M. Martin-Fleitas; R. Messineo; F. Mignard; R. Morbidelli; E. Poggio; A. Riva; N. Rowell; E. Salguero; M. Sarasso; E. Sciacca; H. Siddiqui; R.L. Smart; A. Spagna; I. Steele; F. Taris; J. Torra; A. van Elteren; W. van Reeven; A. Vecchiato

doi:10.1051/0004-6361/201832727

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Volume 616 (August 2018)

A&A, 616 (2018) A2

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Gaia Data Release 2

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Fig. 1

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Effective wavenumber as a function of colour index. The curve is the analytical relation in Eq. (2). We also show the distribution of G_BP –G_RP for a randomselection of bright (G < 12 mag, bluish histogram with two peaks) and faint (G > 18 mag, reddish histogram) sources.

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