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GRAVITY: getting to the event horizon of Sgr A*
F. Eisenhauer, G. Perrin, W. Brandner +45
We present the second-generation VLTI instrument GRAVITY, which currently is in the preliminary design phase. GRAVITY is specifically designed to observe highly relativistic motion…
Science Requirements for EAGLE for the E-ELT
C. J. Evans, M. D. Lehnert, J. -G. Cuby +7
We present an overview of the EAGLE science case, which spans spatially-resolved spectroscopy of targets from five key science areas - ranging from studies of heavily-obscured Gala…
The most massive stars in the Arches cluster
F. Martins, D. J. Hillier, T. Paumard +3
We study a sample composed of 28 of the brightest stars in the Arches cluster. We analyze K-band spectra obtained with the integral field spectrograph SINFONI on the VLT. Atmospher…
Evidence for a Long-Standing Top-Heavy IMF in the Central Parsec of the Galaxy
H. Maness, F. Martins, S. Trippe +10
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 spect…
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…
A polarised infrared flare from Sagittarius A* and the signatures of orbiting plasma hotspots
S. Trippe, T. Paumard, T. Ott +4
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-in…