# 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={A. Boehle and A. Ghez and R. Schodel and L. Meyer and S. Yelda and S. Albers and G. Martinez and E. Becklin and T. Do and J. Lu and K. Matthews and M. Morris and B. Sitarski and G. Witzel},
journal={arXiv: Astrophysics of Galaxies},
year={2016}
}
• A. Boehle, +11 authors G. Witzel
• Published 2016
• Physics
• arXiv: Astrophysics of Galaxies
• 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… CONTINUE READING
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