Abstract
We have searched for the stars that either encountered in the past or will encounter in the future with the Solar system closer than 2 pc. For this purpose, we took more than 216 000 stars with the measured proper motions and trigonometric parallaxes from the Gaia DR1 catalogue and their radial velocities from the RAVE5 catalogue. We have found several stars for which encounters closer than 1 pc are possible. The star GJ 710, for which the minimum distance is d m = 0.063 ± 0.044 pc at time t m = 1385 ± 52 thousand years, is the record-holder among them. Two more stars, TYC 8088-631-1 and TYC 6528-980-1, whose encounter parameters, however, are estimated with large errors, are of interest.
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Original Russian Text © V V. Bobylev, A.T. Bajkova, 2017, published in Pis’ma v Astronomicheskii Zhurnal, 2017, Vol. 43, No. 8, pp. 616–623.
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Bobylev, V.V., Bajkova, A.T. Searching for stars closely encountering with the solar system based on data from the Gaia DR1 and RAVE5 catalogues. Astron. Lett. 43, 559–566 (2017). https://doi.org/10.1134/S1063773717080011
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DOI: https://doi.org/10.1134/S1063773717080011