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Possible astrometric discovery of a substellar companion to the closest binary brown dwarf system WISE J104915.57-531906.1
H. M. J. Boffin, D. Pourbaix, K. Muzic +7
Using FORS2 on the Very Large Telescope, we have astrometrically monitored over a period of two months the two components of the brown dwarf system WISE J104915.57-531906.1, the cl…
The multiplicity of ϕ Phe revisited
Dimitri Pourbaix, Henri M. J. Boffin, Rolf Chini +1
The chemically peculiar B star Phe was, until very recently, considered a triple system, even though the data were not conclusive and the orbits rather uncertain. Very recent r…
The Gaia mission
L. Eyer, B. Holl, D. Pourbaix +5
Gaia is a very ambitious mission of the European Space Agency. At the heart of Gaia lie the measurements of the positions, distances, space motions, brightnesses and astrophysical…