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The VAST Survey - III. The multiplicity of A-type stars within 75 pc
R. J. De Rosa, J. Patience, P. A. Wilson +11
With a combination of adaptive optics imaging and a multi-epoch common proper motion search, we have conducted a large volume-limited (D 75 pc) multiplicity survey of A-type…
Performances tests on the SPHERE-IFS
Dino Mesa, Raffaele Gratton, Riccardo U. Claudi +13
Until now, just a few extrasolar planets (~30 out of 860) have been found through the direct imaging method. This number should greatly improve when the next generation of High Con…
IRDIS, the dual-band imager camera of SPHERE: testing the performances in laboratory
A. Zurlo, A. Vigan, C. Moutou +12
Next year the second generation instrument SPHERE will begin science operations at the Very Large Telecope (ESO). This instrument will be dedicated to the search for exoplanets thr…
Astrophysical false positives in direct imaging for exoplanets: a white dwarf close to a rejuvenated star
A. Zurlo, A. Vigan, J. Hagelberg +17
As is the case for all techniques involved in the research for exoplanets, direct imaging has to take into account the probability of so-called astrophysical false positives, which…