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II. Accurate Positions and Proper Motions of Stellar SiO Masers near the Galactic Center
M. J. Reid, K. M. Menten, R. Genzel +3
Menten, Reid, Eckart and Genzel (1997) accurately determined the position of Sgr A* on an infrared image, by aligning the infrared image with positions measured for SiO masers, ass…
Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way
R. Schodel, T. Ott, R. Genzel +20
Measurements of stellar velocities and variable X-ray emission near the centre of the Milky Way have provided the strongest evidence so far that the dark mass concentrations seen i…
Infrared imaging and spectroscopy of companion candidates near the young stars HD 199143 and HD 358623 in Capricornius
Ralph Neuhaeuser, Eike Guenther, Markus Mugrauer +2
We present JHK images of the young (~20 Myrs) nearby (~48 pc) stars HD 199143 and HD 358623 to search for (sub-)stellar companions around them. The images were obtained in JHK with…
Imaging and spectroscopy of DENIS-P J104814-395606
Ralph Neuhaeuser, Eike Guenther, Joao Alves +8
We obtained deep H- and K-band images of DENIS-P J104814-395606 using SofI and the speckle camera SHARP-I at the ESO-3.5m-NTT as well as QUIRC at the Mauna Kea 2.2m telescope betwe…
Stellar Orbits Near Sagittarius A*
A. Eckart, R. Genzel, T. Ott +1
We present new SHARP/NTT stellar proper motion and accelaration data covering an interval from 1992 to 2000: 1) We combine the high precision but shorter time scale NIRC/Keck data…