High Precision Astrometry with MICADO at the European Extremely Large Telescope (2009)
Trippe, S., Davies, R., Eisenhauer, F., Schreiber, N. M. Foerster, Fritz, T. K., Genzel, R.
In this article we identify and discuss various statistical and systematic effects influencing the astrometric accuracy achievable with MICADO, the near-infrared imaging camera proposed for the...
The orbit of the star S2 around SgrA* from VLT and Keck data (2009)
Gillessen, S., Eisenhauer, F., Fritz, T. K., Bartko, H., Dodds-Eden, K., Pfuhl, O., ...
Two recent papers (Ghez et al. 2008, Gillessen et al. 2009) have estimated the mass of and the distance to the massive black hole in the center of the Milky Way using stellar orbits. The two...
An Extremely Top-Heavy IMF in the Galactic Center Stellar Disks (2009)
Bartko, H., Martins, F., Trippe, S., Fritz, T. K., Genzel, R., Ott, T., ...
We present new observations of the nuclear star cluster in the central parsec of the Galaxy with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our work allows the...
Dodds-Eden, K., Porquet, D., Trap, G., Quataert, E., Haubois, X., Gillessen, S., ...
This paper reports measurements of Sgr A* made with NACO in L' -band (3.80 um), Ks-band (2.12 um) and H-band (1.66 um) and with VISIR in N-band (11.88 um) at the ESO VLT, as well as with XMM-Newton...
Evidence for warped disks of young stars in the galactic center (2009)
Bartko, H., Martins, F., Fritz, T. K., Genzel, R., Levin, Y., Perets, H. B., ...
Evidence for Warped Disks of Young Stars in the Galactic Center (2008)
Bartko, H., Martins, F., Fritz, T. K., Genzel, R., Levin, Y., Perets, H. B., ...
The central parsec around the super-massive black hole in the Galactic Center hosts more than 100 young and massive stars. Outside the central cusp (R~1") the majority of these O and Wolf-Rayet (WR)...
Kinematics of the old stellar population at the Galactic Center (2008)
Trippe, S., Gillessen, S., Gerhard, O. E., Bartko, H., Fritz, T. K., Maness, H. L., ...
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 applied AO-assisted,...