Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confe..86a&link_type=abstract
Proceedings of the conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 -
Astronomy and Astrophysics
Astrophysics
Scientific paper
We propose a spectro-astrometric observing mode for the Japanese/European SPICA mission. It is expected to offer an additional detecting/characterizing capability to the SPICA coronagraph (see Haze et al., this conference). Indeed the spectro-astrometric technique will be sensitive to very close-in giant planets orbiting at a typical distance from 0.01 to a few AUs. It is capable in principle to recover astrometric parameters as well as spectra from a host planet. In this poster, we summarize the main aspects of this observing technique, and we present the current status of our on-going laboratory experiment. Our goal is to demonstrate the capabilty to measure differential photocentre displacements down to at least 10-3 pixels, thus validating our spectro-astometric measurement model. We discuss the various instrumental and astrophysical effects that we expect to hamper the exo-planetary spectro-astrometric signature.
Abe Lyu
Binet V.
Enya Keigo
Kataza Hirokazu
Petrov Romain
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