The Proper Motion of Sagittarius A*. II. The Mass of Sagittarius A*
Copyright policy ) M. J. Reid; A. Brunthaler;
The Proper Motion of Sagittarius A*. II. The Mass of Sagittarius A*
We report measurements with the Very Long Baseline Array (VLBA) of the position of Sgr A* with respect to two extragalactic radio sources over a period of 8 yr. The apparent proper motion of Sgr A* relative to J1745� 283 is 6:379 � 0:024 mas yr � 1 along a position angle of 209N60 � 0N18, almost entirely in the plane of the Galaxy. The effects of the orbit of the Sun around the Galactic center can account for this motion, and the residual proper motion of Sgr A* perpendicular to the plane of the Galaxy is � 0:4 � 0: 9k m s � 1 . A maximum likelihood analysis of the motion expected for a massive object within the observed Galactic center stellar cluster indicates that Sgr A*
- Max Planck Institute for Radio Astronomy Germany
- Harvard University United States
- Harvard-Smithsonian Center for Astrophysics United States
- Max Planck Society Germany
- Joint Institute for VLBI in Europe Netherlands
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These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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