An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis

@article{Boehle2016AnID,
  title={An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis},
  author={Anna Boehle and Andrea M. Ghez and Rainer Schodel and Leonhard Meyer and Sylvana Yelda and Saundra M. Albers and Gregory D Martinez and Eric Edward Becklin and Tuan Do and J. R. Lu and Keith Y. Matthews and Mark R. Morris and Breann N. Sitarski and Gunther Witzel},
  journal={arXiv: Astrophysics of Galaxies},
  year={2016}
}
We present new, more precise measurements of the mass and distance of our Galaxy's central supermassive black hole, Sgr A*. These results stem from a new analysis that more than doubles the time baseline for astrometry of faint stars orbiting Sgr A*, combining two decades of speckle imaging and adaptive optics data. Specifically, we improve our analysis of the speckle images by using information about a star's orbit from the deep adaptive optics data (2005 - 2013) to inform the search for the… Expand
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TLDR
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