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Astrometric Detection of a Low Mass Companion Orbiting the Star AB DoradusWe report submilliarsecond-precise astrometric measurement for the late-type star AB Doradus via a combination of VLBI (very long baseline interferometry) and Hipparos satellite data. Our astrometric analysis results in the precise determination of the kinematics of this star, that reveals an orbital motion readily explained as caused by the gravitational interaction with a low-mass companion.
Document ID
20060041717
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Soderhjelm, S.
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.
Lowell, J. E. J.
McCulloch, P. M.
Johnston, K. J.
Kingham, K. A.
Date Acquired
August 23, 2013
Publication Date
January 1, 1997
Subject Category
Astronomy
Distribution Limits
Public
Copyright
Other
Keywords
kinematics low-mass companion astrometry interferometric stars brown dwarfs

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