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First light of the VLT planet finder SPHERE. IV. Physical and chemical properties of the planets around HR8799
M. Bonnefoy, A. Zurlo, J. L. Baudino +63
The system of four planets around HR8799 offers a unique opportunity to probe the physics and chemistry at play in the atmospheres of self-luminous young (~30 Myr) planets. We rece…
First light of the VLT planet finder SPHERE. I. Detection and characterization of the sub-stellar companion GJ 758 B
A. Vigan, M. Bonnefoy, C. Ginski +72
GJ758 B is a brown dwarf companion to a nearby (15.76 pc) solar-type, metal-rich (M/H = +0.2 dex) main-sequence star (G9V) that was discovered with Subaru/HiCIAO in 2009. From prev…
A narrow, edge-on disk resolved around HD 106906 with SPHERE
A. -M. Lagrange, M. Langlois, R. Gratton +39
HD~106906AB is so far the only young binary system around which a planet has been imaged and a debris disk evidenced thanks to a strong IR excess. As such, it represents a unique o…