Towards Astrometric Planet Detection with the VLT

Details Towards Astrometric Planet Detection with the VLT Towards Astrometric Planet Detection with the VLT

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.2301s&link_type=abstract

American Astronomical Society, ESS meeting #2, #23.01

Computer Science

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Scientific paper

Two astrometric planet search programmes are in progress at the Very Large Telescope:
(1) Using FORS2, we are surveying the astrometric motion of twenty close-by L- and M-dwarfs over two years, with the goal of detecting the orbital motion caused by a substellar or planetary companion. The obtained astrometric precision of 0.1 milli-arcsec per epoch is sufficient to detect a Neptune mass planet in a 1.5-year orbit.
(2) We are commissioning PRIMA at the VLTI and are about to start an large astrometry programme to characterise the masses of known RV-planets and to search for long-period planets around young and main-sequence stars.
I will report on the performances and results obtained with these two new planet search programmes.

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