To date, 5,084 extrasolar planets have been confirmed in 3,811 planetary systems, with another 8,912 candidates awaiting confirmation.
For their study, Curiel and his colleagues combined VLBA data obtained between 2006 and 2011 with observations made of the system between 1941 and 2017.
They then performed an extensive analysis of the data that revealed the stars' orbital motions and their common motions through space. This process, where the position and proper motion of stars are measured, is known as Astrometry. "This means that the planet moves around the main star in the opposite direction to that of the secondary star around the main star," said co-author Gisela Ortiz-León, a researcher with the UNAM and the MPIA.
The astrometric technique will be a valuable tool for characterizing more planetary systems, which will benefit from observatories like the plannedThis massive network will consist of 244 18-meter dishes spread over a distance of 8,860 km , with an additional short-spacing array of 19 6-meter dishes at the heart of the telescope.
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