Andrei Alexandre Humberto - Gaia
Gaia was proposed in 1993 and since then, many people have been involved in the Gaia mission, whether at ESA, at industry side or at one of the institutes involved in the Gaia data processing. The Gaia Data Processing and Analysis Consortium (DPAC) is a collaboration which consists of around 450 scientists and engineers.
The list of Gaia contributors presented here should not be considered a complete representation of the entire consortium. A more complete list of Gaia contributors that were involved in the creation of the Gaia catalogues can be obtained from the author lists of the Gaia Collaboration papers (for Gaia Data Release 1 see here, for Gaia Data Release 2 see here, for Gaia Early Data Release 3 see here). A history of contributions to the Gaia mission can be found from the acknowledgements given with each data release.
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Observatorio Nacional / MCT
Alexandre Humberto Andrei graduated in Astronomy (from the Universidade Federal do Rio de Janeiro (UFRJ), Observatorio do Valongo) and received his MSc in Astrometry from the Instituto Astronomico e Geofisico da Universidade de Sao Paulo (IAG/USP). He was awarded his PhD in 1988 from the Department of Physics, University of Cambridge, UK, for his thesis on "Observed and Predicted Data in Radio Astrometric Observations".
Alexandre has Brazilian-Rumanian citizenship and is Senior Researcher at Observatorio Nacional (Brazil) and Lecturer at the Universidade Federal do Rio de Janeiro. Other long-term positions were held at the University of York (Canada) and at the Observatoire de Paris.
His main scientific interests lie in the fields of optical and radio astrometry, and solar physics. He is an associate member of the Relativity and Reference Frame Working Group working on quasar characteristics and distribution, with a view to building a simulation of the Gaia extragalactic reference frame.
Alexandre left the Gaia mission in January 2020.
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