Gaia Data Release 1 - Astrometry: one billion positions, two million proper motions and parallaxes

L. Lindegren; U. Lammers; U. Bastian; J. Hernández; S. Klioner; D. Hobbs; A. Bombrun; D. Michalik; M. Ramos-Lerate; A. Butkevich; G. Comoretto; E. Joliet; B. Holl; A. Hutton; P. Parsons; H. Steidelmüller; U. Abbas; M. Altmann; A. Andrei; S. Anton; N. Bach; C. Barache; U. Becciani; J. Berthier; L. Bianchi; M. Biermann; S. Bouquillon; G. Bourda; T. Brüsemeister; B. Bucciarelli; D. Busonero; T. Carlucci; J. Castañeda; P. Charlot; M. Clotet; M. Crosta; M. Davidson; F. de Felice; R. Drimmel; C. Fabricius; A. Fienga; F. Figueras; E. Fraile; M. Gai; N. Garralda; R. Geyer; J. J. González-Vidal; R. Guerra; N. C. Hambly; M. Hauser; S. Jordan; M. G. Lattanzi; H. Lenhardt; S. Liao; W. Löffler; P. J. McMillan; F. Mignard; A. Mora; R. Morbidelli; J. Portell; A. Riva; M. Sarasso; I. Serraller; H. Siddiqui; R. Smart; A. Spagna; U. Stampa; I. Steele; F. Taris; J. Torra; W. van Reeven; A. Vecchiato; S. Zschocke; J. de Bruijne; G. Gracia; F. Raison; T. Lister; J. Marchant; R. Messineo; M. Soffel; J. Osorio; A. de Torres; W. O’Mullane

doi:10.1051/0004-6361/201628714

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Volume 595 (November 2016)

A&A, 595 (2016) A4

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Gaia Data Release 1

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Fig. A.2

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Example of the BAM signal for the preceding field of view. Time is expressed in revolutions of the onboard mission timeline (OBMT; Sect. 3.1). Top: individual fringe position measurements ξ^P after removal of outliers. Bottom: residuals after fitting the model in Eq. (A.9).

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