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...
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLT (2009)
Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Böhm, A., Baumeister, H., ...
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...
GRAVITY: getting to the event horizon of Sgr A* (2008)
Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Richichi, A., Gillessen, S., ...
We present the second-generation VLTI instrument GRAVITY, which currently is in the preliminary design phase. GRAVITY is specifically designed to observe highly relativistic motions of matter close...
Science Requirements for EAGLE for the E-ELT (2008)
Evans, C. J., Lehnert, M. D., Morris, S. L., Swinbank, A. M., Taylor, W. D., ...
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 Galactic star clusters,...
Scientific prospects for VLTI in the galactic centre: getting to the Schwarzschild radius (2008)
Paumard, T., Perrin, G., Eckart, A., Genzel, R., Léna, P., Schödel, R., ...
GRAVITY: the AO-assisted, two-object beam-combiner instrument for the VLTI (2008)
Eisenhauer, F., Perrin, G., Rabien, S., Eckart, A., Léna, P., Genzel, R., ...
The most massive stars in the Arches cluster (2008)
Martins, F., Hillier, D. J., Paumard, T., Eisenhauer, F., Ott, T., Genzel, R.
Near-infrared observations of Sagittarius A* (2008)
Trippe, S., Paumard, T., Gillessen, S., Ott, T., Eisenhauer, F., Martins, F., ...
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLTI (2008)
Eisenhauer, F., Perrin, G., Straubmeier, C., Brandner, W., Boehm, A., Cassaing, 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,...
The galactic center large program (2008)
Haubois, X., Genzel, R., Perrin, G., Gillessen, S., Paumard, T., Dodds-Eden, K., ...
GRAVITY: getting to the event horizon of Sgr A* (2008)
Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Richichi, A., Gillessen, S., ...
Young stars in the galactic center: One or two disks? (2008)
Bartko, H., Eisenhauer, F., Fritz, T., Genzel, R., Gillessen, S., Martins, F., ...
GRAVITY: the AO-assisted, two-object beam-combiner instrument for the VLTI (2008)
Eisenhauer, F., Perrin, G., Rabien, S., Eckart, A., Léna, P., Genzel, R., ...
We present the proposal for the infrared adaptive optics (AO) assisted, two-object, high-throughput, multiple-beam-combiner GRAVITY for the VLTI. This instrument will be optimized for...
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLTI (2008)
Eisenhauer, F., Perrin, G., Straubmeier, C., Brandner, W., Boehm, A., Cassaing, F., ...
We present the adaptive optics assisted, near-infrared VLTI instrument GRAVITY for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objects. With its two fibers...
GRAVITY: getting to the event horizon of Sgr A* (2008)
Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Richichi, A., Gillessen, S., ...
We present the second-generation VLTI instrument GRAVITY, which currently is in the preliminary design phase. GRAVITY is specifically designed to observe highly relativistic motions of matter close...
The most massive stars in the Arches cluster (2007)
Martins, F., Hillier, D. J., Paumard, T., Eisenhauer, F., Ott, T., Genzel, R.
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. Atmosphere models computed...
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., ...
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...
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...
GRAVITY: The adaptive optics assisted, two object beam combiner for the VLTI (2006)
Gillessen, S., Perrin, G., Brandner, W., Straubmeier, C., Eisenhauer, F., Rabien, S., ...
We present the adaptive optics assisted, near-infrared VLTI instrument - GRAVITY - for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objects. Precision...
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...
Clockwise Stellar Disk and the Dark Mass in the Galactic Center (2006)
Beloborodov, A. M., Levin, Y., Eisenhauer, F., Genzel, R., Paumard, T., Gillessen, S., ...
Two disks of young stars have recently been discovered in the Galactic Center. The disks are rotating in the gravitational field of the central black hole at radii r=0.1-0.3 pc and thus open a new...
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., ...
GCIRS 16SW: a massive eclipsing binary in the galactic center (2006)
Martins, F., Trippe, S., Paumard, T., Ott, T., Genzel, R., Rauw, G., ...
GRAVITY - the adaptive optics assisted, two object beam combiner for the VLTI (2006)
Gillessen, S., Perin, G., Brandner, W., Straubmeier, C., Eisenhauer, F., Rabien, S., ...
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., ...
Stellar orbits around Sgr A* (2006)
Trippe, S., Gillessen, S., Ott, T., Eisenhauer, F., Paumard, T., Martins, F., ...
GRAVITY: the adaptive-optics-assisted two-object beam combiner instrument for the VLTI (2006)
Gillessen, S., Perrin, G., Brandner, W., Straubmeier, C., Eisenhauer, F., Rabien, S., ...
We present the adaptive optics assisted, near-infrared VLTI instrument - GRAVITY - for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objects. Precision...
GRAVITY: probing space-time and faint objects in the infrared (2006)
Haubois, X., Eisenhauer, F., Perrin, G., Rabien, S., Eckart, A., Lena, P., ...
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...
GRAVITY: The AO-Assisted, Two-Object Beam-Combiner Instrument (2005)
Eisenhauer, F., Perrin, G., Rabien, S., Eckart, A., Lena, P., Genzel, R., ...
We present the proposal for the infrared adaptive optics (AO) assisted, two-object, high-throughput, multiple-beam-combiner GRAVITY for the VLTI. This instrument will be optimized for...
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...
SINFONI in the galactic center: young stars and infrared flares in the central light-month (2005)
Eisenhauer, F., Genzel, R., Alexander, T., Abuter, R., Paumard, T., Ott, T., ...
Stellar populations in the galactic center (2005)
Martins, F., Genzel, R., Paumard, T., Abuter, R., Eisenhauer, F., Gillessen, S., ...
Census of the Galactic Centre early-type stars using spectro-imagery (2004)
Paumard, T., Genzel, R., Maillard, J. P., Ott, T., Morris, M., Eisenhauer, F., ...
The few central parsecs of the Galaxy are known to contain a surprising population of early-type stars, including at least 30 Wolf-Rayet stars and luminous blue variables (LBV), identified thanks to...
Maillard, J. P., Paumard, T., Stolovy, S. R., Rigaut, F.
High spatial resolution observations in the 1 to 3.5 micron region of the Galactic Center source known historically as IRS 13 are presented. They include ground-based adaptive optics images in the H,...
New Results on the Helium Stars in the Galactic Center Using BEAR Spectro-Imagery (2000)
Paumard, T., Maillard, J. P., Morris, M., Rigaut, F.
Integral field spectroscopy of the central parsec of the Galactic Center was obtained at 2.06 microns using BEAR, an imaging Fourier Transform Spectrometer, at a spectral resolution of 74 km/s....