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Monitoring stellar orbits around the Massive Black Hole in the Galactic Center
S. Gillessen, F. Eisenhauer, S. Trippe +4
We present the results of 16 years of monitoring stellar orbits around the massive black hole in center of the Milky Way using high resolution NIR techniques. This work refines our…
Kinematics of the old stellar population at the Galactic Center
S. Trippe, S. Gillessen, O. E. Gerhard +8
We aim at a detailed description of the kinematic properties of the old, (several Gyrs) late-type CO-absorption star population among the Galactic centre (GC) cluster stars. We app…
On the nature of the fast moving star S2 in the Galactic Center
F. Martins, S. Gillessen, F. Eisenhauer +3
We analyze the properties of the star S2 orbiting the supermassive black hole at the center of the Galaxy. A high quality SINFONI H and K band spectrum obtained from coadding 23.5…
Stellar and wind properties of massive stars in the central parsec of the Galaxy
F. Martins, R. Genzel, D. J. Hillier +5
We study the stellar and wind properties of massive stars in the central cluster of the Galaxy. We use non-LTE atmosphere models including winds and line-blanketing to fit their H…
The Two Young Star Disks in the Central Parsec of the Galaxy: Properties, Dynamics and Formation
T. Paumard, R. Genzel, F. Martins +11
We report the definite spectroscopic identification of 41 OB supergiants, giants and main sequence stars in the central parsec of the Galaxy. Detection of their absorption lines ha…
GCIRS34W: An irregular variable in the Galactic Centre
S. Trippe, F. Martins, T. Ott +7
We report the results of time-resolved photometric and spectroscopic near-infrared observations of the Ofpe/WN9 star and LBV candidate GCIRS34W in the Galactic Centre star cluster.…