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The Keplerian orbit of G2
L. Meyer, A. M. Ghez, G. Witzel +8
We give an update of the observations and analysis of G2 - the gaseous red emission-line object that is on a very eccentric orbit around the Galaxy's central black hole and predict…
3D stellar kinematics at the Galactic center: measuring the nuclear star cluster spatial density profile, black hole mass, and distance
T. Do, G. D. Martinez, S. Yelda +6
We present 3D kinematic observations of stars within the central 0.5 pc of the Milky Way nuclear star cluster using adaptive optics imaging and spectroscopy from the Keck telescope…
Astrometry in the Galactic Center with the Thirty Meter Telescope
Sylvana Yelda, Leo Meyer, Andrea Ghez +1
We report on the expected astrometric performance of the Thirty Meter Telescope's InfraRed Imaging Spectrometer (IRIS) as determined using simulated images of the Galactic center.…
Stellar and circumstellar properties of visual binaries in the Orion Nebula Cluster
S. Correia, G. Duchene, B. Reipurth +8
Our general understanding of multiple star and planet formation is primarily based on observations of young multiple systems in low density regions like Tau-Aur and Oph. Since many…
Substellar multiplicity in the Hyades cluster
G. Duchene, J. Bouvier, E. Moraux +3
We present the first high-angular resolution survey for multiple systems among very low-mass stars and brown dwarfs in the Hyades open cluster. Using the Keck\,II adaptive optics s…
Keck Observations of the Galactic Center Source G2: Gas Cloud or Star?
K. Phifer, T. Do, L. Meyer +8
We present new observations and analysis of G2 - the intriguing red emission-line object which is quickly approaching the Galaxy's central black hole. The observations were obtaine…