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Paper: Evidence of a Low-Mass Companion to AB Doradus
Volume: 144, Radio Emission from Galactic and Extragalactic Compact Sources, IAU Colloquium 164
Page: 325
Authors: Guirado, J. C.; Reynolds, J. E.; Lestrade, J.-F.; Preston, R. A.; Jauncey, D. L.; Jones, D. L.; Tzioumis, A. K.; Ferris, R. H.; King, E. A.; Lovell, J. E. J.; McCulloch, P. M.; Johnston, K. J.; Kingham, K. A.; Martin, J. O.; White, G. L.; Jones, P. A.; Arenou, F.; Froeschle, M.; Kovalevsky, J.; Martin, C.; Lindegren, L.; Soderhjelm, S.
Abstract: From the combination of VLBI phase-referenced observations and Hipparcos satellite data, we have found evidence of a low-mass object orbiting the late-type star AB Doradus. The mass of the new object is near the hydrogen burning limit and will constitute a precise point for calibrating the low end of the main sequence. This represents the first detection of a low-mass stellar companion using the VLBI technique, which could become an important tool in future searches for planets and brown dwarfs orbiting other stars.
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