SATO , Bun'ei

We present velocity maps of Jupiter obtained from the ground with a dedicated Doppler imaging spectrograph. It demonstrates the potential of this method to study the motion in the atmosphere of gaseous planets. It proves to be complementary to cloud-tracking to understand the atmospheric dynamics

We describe the performances of a novel Doppler imager, aimed to detect acoustic oscillations and atmospheric dynamics at the surface of giant planets of the Solar System in the frame of the JOVIAL (Jovian Oscillations detection by Velocity Imaging At several Longitudes) project. The first JOVIAL instrument was installed on the 188cm telescope...

We present the direct-imaging discovery of a substellar companion in orbit around a Sun-like star member of the Hyades open cluster. So far, no other substellar companions have been unambiguously confirmed via direct imaging around main-sequence stars in Hyades. The star HIP 21152 is an accelerating star as identified by the astrometry from the...