The Galactic Center: Improved Relative Astrometry for Velocities, Accelerations, and Orbits near the Supermassive Black Hole

We present improved relative astrometry for stars within the central half parsec of our Galactic Center (GC) based on data obtained with the 10 m W. M. Keck Observatory from 1995 to 2017. The new methods used to improve the astrometric precision and accuracy include correcting for local astrometric...

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Veröffentlicht in:	The Astrophysical journal 2019-03, Vol.873 (1), p.9
Hauptverfasser:	Jia, Siyao, Lu, Jessica R., Sakai, S., Gautam, A. K., Do, T., Hosek, M. W., Service, M., Ghez, A. M., Gallego-Cano, E., Schödel, R., Hees, Aurelien, Morris, M. R., Becklin, E., Matthews, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acceleration Astrometry Astrophysics Binary stars Dynamic structural analysis Error analysis Error correction Galaxy: center Globular clusters Gravitational fields infrared: stars Instrumentation and Methods for Astrophysic Orbits Physics proper motions Relativity Solar and Stellar Astrophysics Star clusters stars: black holes Supermassive black holes Systematic errors techniques: high angular resolution Uncertainty
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