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...
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...
Monitoring stellar orbits around the massive black hole in the galactic center (2009)
Gillessen, S., Eisenhauer, F., Trippe, S., Alexander, T., Genzel, R., Martins, F., ...
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)...
Hamaus, N., Paumard, T., Müller, T., Gillessen, S., Eisenhauer, F., Trippe, S., ...
Sagittarius A*, the supermassive compact object at the center of the Galaxy, exhibits outbursts in the near infrared and X-ray domains. These flares are likely due to energetic events very close to...
Monitoring stellar orbits around the Massive Black Hole in the Galactic Center (2008)
Gillessen, S., Eisenhauer, F., Trippe, S., Alexander, T., Genzel, R., Martins, F., ...
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 previous analysis...
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,...
On the nature of the fast-moving star S2 in the galactic center (2008)
Martins, F., Gillessen, S., Eisenhauer, F., Genzel, R., Ott, T., Trippe, S.
Near-infrared observations of Sagittarius A* (2008)
Trippe, S., Paumard, T., Gillessen, S., Ott, T., Eisenhauer, F., Martins, F., ...
15 years of high precision astrometry in the galactic center (2008)
Gillessen, S., Genzel, R., Eisenhauer, F., Ott, T., Trippe, S., Martins, F.
Near-infrared observations of Sagittarius A* (2008)
Trippe, S., Paumard, T., Gillessen, S., Ott, T., Eisenhauer, F., Martins, F., ...
Near-infrared observations of Sagittarius A (2008)
F. Eisenhauer, F. Martins, R. Genzel, S. Gillessen, S. Trippe, T. Ott, ...
We present and discuss recent near infrared observations of Sagittarius A, the supermassive black hole in the centre of our Galaxy. Since 2003 this source has been observed photometrically,...
Kinematics of the old stellar population at the galactic centre (2008)
Trippe, S., Gillessen, S., Gerhard, O. E., Bartko, H., Fritz, T. K., Maness, H. L., ...
Young stars in the galactic center: One or two disks? (2008)
Bartko, H., Eisenhauer, F., Fritz, T., Genzel, R., Gillessen, S., Martins, F., ...
Massive stars in the galactic center (2008)
Martins, F., Hillier, D. J., Genzel, R., Eisenhauer, F., Ott, T., Gillessen, S., ...
On the nature of the fast moving star S2 in the Galactic Center (2007)
Martins, F., Gillessen, S., Eisenhauer, F., Genzel, R., Ott, T., Trippe, S.
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 hours of...
Evidence for a Long-Standing Top-Heavy IMF in the Central Parsec of the Galaxy (2007)
Maness, H., Martins, F., Trippe, S., Genzel, R., Graham, J. R., Sheehy, C., ...
We classify 329 late-type giants within 1 parsec of Sgr A*, using the adaptive optics integral field spectrometer SINFONI on the VLT. These observations represent the deepest spectroscopic data set...
Stellar and wind properties of massive stars in the central parsec of the Galaxy (2007)
Martins, F., Genzel, R., Hillier, D. J., Eisenhauer, F., Paumard, T., Gillessen, S., ...
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 and K band spectra...
A polarized infrared flare from Sagittarius A* and the signatures of orbiting plasma hotspots (2007)
Trippe, S., Paumard, T., Ott, T., Gillessen, S., Eisenhauer, F., Martins, F., ...
Stellar and wind properties of massive stars in the central parsec of the galaxy (2007)
Martins, F., Genzel, R., Hillier, D. J., Eisenhauer, F., Paumard, T., Gillessen, S., ...
Stellar populations in the galactic center with SINFONI (2007)
Martins, F., Genzel, R., Paumard, T., Eisenhauer, F., Ott, T., Trippe, S., ...
The flare activity of Saggittarius A* (2007)
Eckart, A., Schödel, R., Meyer, L., Ott, T., Trippe, S., Genzel, R.
The Position of Sagittarius A*: III. Motion of the Stellar Cusp (2006)
Reid, M. J., Menten, K. M., Trippe, S., Ott, T., Genzel, R.
In the first two papers of this series, we determined the position of Sgr A* on infrared images, by aligning the positions of red giant stars with positions measured at radio wavelengths for their...
A polarised infrared flare from Sagittarius A* and the signatures of orbiting plasma hotspots (2006)
Trippe, S., Paumard, T., Ott, T., Gillessen, S., Eisenhauer, F., Martins, F., ...
In this article we summarise and discuss the infrared, radio, and X-ray emission from the supermassive black hole in the Galactic Centre, SgrA*. We include new results from near-infrared polarimetric...
Polarimetry of near-infrared flares from Sagittarius A* (2006)
Eckart, A., Schoedel, R., Meyer, L., Trippe, S., Ott, T., Genzel, R.
Context: We report new polarization measurements of the variable near-infrared emission of the SgrA* counterpart associated with the massive 3--4 10^6 solar masses Black Hole at the Galactic Center....
GCIRS 16SW: A massive eclipsing binary in the Galactic center (2006)
Martins, F, Trippe, S, Paumard, T, Ott, T, Genzel, R, Rauw, Grégor, ...
We report on the spectroscopic monitoring of GCIRS 16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K...
GCIRS16SW: a massive eclipsing binary in the Galactic Center (2006)
Martins, F., Trippe, S., Paumard, T., Ott, T., Genzel, R., Rauw, G., ...
We report on the spectroscopic monitoring of GCIRS16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K...
Paumard, T., Genzel, R., Martins, F., Nayakshin, S., Beloborodov, A. M., Levin, Y., ...
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 have become possible...
GCIRS34W: an irregular variable in the galactic centre (2006)
Trippe, S., Martins, F., Ott, T., Paumard, T., Abuter, R., Eisenhauer, F., ...
Variations in the spectral slope of Sagittarius A* during a near-infrared flare (2006)
Gillessen, S., Eisenhauer, F., Quataert, E., Genzel, R., Paumard, T., Trippe, S., ...
The flare activity of Sagittarius A*: new coordinated mm to X-ray observations (2006)
Eckart, A., Baganoff, F. K., Schödel, R., Morris, M., Genzel, R., Bower, G. C., ...
Polarimetry of near-infrared flares from Sagittarius A* (2006)
Eckart, A., Schödel, R., Meyer, L., Trippe, S., Ott, T., Genzel, R.
GCIRS 16SW: a massive eclipsing binary in the galactic center (2006)
Martins, F., Trippe, S., Paumard, T., Ott, T., Genzel, R., Rauw, G., ...
Variations in the spectral slope of Sgr A* during a NIR flare (2006)
Gillessen, Stefan, Eisenhauer, F., Quataert, E., Genzel, R., Paumard, T., Trippe, S., ...
Multi-wavelength and polarimetric observations of Sagittarius A* (2006)
Eckart, A., Schödel, R., Meyer, L., Trippe, S., Ott, T., Genzel, R., ...
Stellar orbits around Sgr A* (2006)
Trippe, S., Gillessen, S., Ott, T., Eisenhauer, F., Paumard, T., Martins, F., ...
The Flare Activity of SgrA*; New Coordinated mm to X-Ray Observations (2005)
Eckart, A., Baganoff, F. K., Schoedel, R., Morris, M., Genzel, R., Bower, G. C., ...
We report new simultaneous near-infrared/sub-millimeter/X-ray observations of the SgrA* counterpart associated with the massive 3-4x10**6 solar mass black hole at the Galactic Center. The main aim is...
Variations in the spectral slope of Sgr A* during a NIR flare (2005)
Gillessen, S., Eisenhauer, F., Quataert, E., Genzel, R., Paumard, T., Trippe, S., ...
We have observed a bright flare of Sgr A* in the near infrared with the adaptive optics assisted integral field spectrometer SINFON. Within the uncertainties, the observed spectrum is featureless and...
GCIRS34W: An irregular variable in the Galactic Centre (2005)
Trippe, S., Martins, F., Ott, T., Paumard, T., Abuter, R., Eisenhauer, F., ...
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. Diffraction...
SINFONI in the Galactic Center: young stars and IR flares in the central light month (2005)
Eisenhauer, F., Genzel, R., Alexander, T., Abuter, R., Paumard, T., Ott, T., ...
We report 75 milli-arcsec resolution, near-IR imaging spectroscopy within the central 30 light days of the Galactic Center [...]. To a limiting magnitude of K~16, 9 of 10 stars in the central 0.4...