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ASTEP South: An Antarctic Search for Transiting Planets around the celestial South pole
Nicolas Crouzet, Karim Agabi, Alain Blazit +11
ASTEP South is the first phase of the ASTEP project that aims to determine the quality of Dome C as a site for future photometric searches for transiting exoplanets and discover ex…
An Eight-Octant Phase-Mask Coronagraph
N. Murakami, R. Uemura, N. Baba +4
We present numerical simulations and laboratory experiments on an eight-octant phase-mask (EOPM) coronagraph. The numerical simulations suggest that an achievable contrast for the…
Prototyping coronagraphs for exoplanet characterization with SPHERE
Anthony Boccaletti, Lyu Abe, Jacques Baudrand +7
The detection and characterization of extrasolar planets with SPHERE (Spectro Polarimetric High contrast Exoplanet REsearch) is challenging and in particular relies on the ability…
Precise Wavefront Correction with an Unbalanced Nulling Interferometer for Exo-Planet Imaging Coronagraphs
J. Nishikawa, L. Abe, N. Murakami +1
Very high dynamical range coronagraphs targeting direct exo-planet detection (10^9 - 10^10 contrast) at small angular separation (few lambda/D units) usually require an input wavef…
On-sky observations with an achromatic hybrid phase knife coronagraph in the visible
Lyu Abe, Mathilde Beaulieu, Farrokh Vakili +4
CONTEXT: The four-quadrant phase mask stellar coronagraph, introduced by D. Rouan et al., is capable of achieving very high dynamical range imaging and was studied in the context o…
Sub-Arcsecond Near-Infrared Images of Massive Star Formation Region NGC 6334 V
Jun Hashimoto, Motohide Tamura, Hiroshi Suto +4
We present high spatial resolution (0$\farcs$3) polarimetric images in the and bands and direct images in the and bands of the NGC 6334 V infrared nebulae. The im…