ESPRI - Exoplanet Search with PRIMA

Details ESPRI - Exoplanet Search with PRIMA ESPRI - Exoplanet Search with PRIMA

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21422904q&link_type=abstract

American Astronomical Society, AAS Meeting #214, #229.04; Bulletin of the American Astronomical Society, Vol. 41, p.733

Computer Science

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Scientific paper

ESPRI will use the PRIMA facility of the Very Large Telescope Interferometer to determine astrometric orbits of planets already known from radial-velocity surveys, and to search for new planets around stars that are not suitable for precise radial-velocity measurements. The ESPRI consortium has built and delivered the differential delay lines of PRIMA. Commissioning of this facility is currently proceeding at Cerro Paranal in Chile. The ESPRI consortium is also responsible for the astrometric data reduction pipeline, and for the development of observing and calibration strategies. In return, the ESPRI team will get guaranteed observing time for an exoplanet search program, which is expected to begin taking data in 2010.
In preparation of this astrometric program, an infrared imaging survey has been conducted with telescopes on La Silla and Calar Alto, to identify suitable pairs of tartgets and astrometric reference stars. A list of 100 targets for the ESPRI program is being generated from this survey.
In this paper, the status of the PRIMA commissioning will be summarized, the compilation of the ESPRI target list will be described, and the expected performance of the astrometric mode of the VLTI will be discussed.

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