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Evidence for Warped Disks of Young Stars in the Galactic Center
H. Bartko, F. Martins, T. K. Fritz +18
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 a…
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…
Molecular gas streamers feeding and obscuring the active nucleus of NGC1068
F. Mueller Sanchez, R. I. Davies, R. Genzel +5
We report the first direct observations of neutral, molecular gas streaming in the nucleus of NGC1068 on scales of <30 pc using SINFONI near-infrared integral field spectroscopy. A…
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…
Study of the Science Capabilities of PRIMA in the Galactic Center
H. Bartko, O. Pfuhl, F. Eisenhauer +8
The Phase-Referenced Imaging and Micro-arcsecond Astrometry (PRIMA) facility is scheduled for installation in the Very Large Telescope Interferometer observatory in Paranal, Chile,…
Interferometric CO Observations of submillimeter-faint, radio-selected starburst galaxies at z~2
S. C. Chapman, R. Neri, F. Bertoldi +9
High-redshift, dust-obscured galaxies -- selected to be luminous in the radio but relatively faint at 850um -- appear to represent a different population from the ultra-luminous su…
From rings to bulges: evidence for rapid secular galaxy evolution at z~2 from integral field spectroscopy in the SINS survey
R. Genzel, A. Burkert, N. Bouche +22
We present Ha integral field spectroscopy of well resolved, UV/optically selected z~2 star-forming galaxies as part of the SINS survey with SINFONI on the ESO VLT. Our laser guide…
X-ray hiccups from SgrA* observed by XMM-Newton. The second brightest flare and three moderate flares caught in half a day
D. Porquet, N. Grosso, P. Predehl +14
[truncated] In Spring 2007, we observed SgrA* with XMM with a total exposure of ~230ks. We have performed timing and spectral analysis of the new X-ray flares detected during this…
Extended silicate dust emission in PG QSOs
M. Schweitzer, B. Groves, H. Netzer +9
This paper addresses the origin of the silicate emission observed in PG QSOs, based on observations with the Spitzer Space Telescope. Scenarios based on the unified model suggest t…
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…
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…
Dynamical Properties of z~2 Star Forming Galaxies and a Universal Star Formation Relation
N. Bouche, G. Cresci, R. Davies +17
We present the first comparison of the dynamical properties of different samples of z~1.4-3.4 star forming galaxies from spatially resolved imaging spectroscopy from SINFONI/VLT in…
The Galactic Center
R. Genzel, V. Karas
In the past decade high resolution measurements in the infrared employing adaptive optics imaging on 10m telescopes have allowed determining the three dimensional orbits stars with…
A Close Look at Star Formation around Active Galactic Nuclei
R. Davies, F. Mueller Sanchez, R. Genzel +4
We analyse star formation in the nuclei of 9 Seyfert galaxies at spatial resolutions down to 0.085arcsec, corresponding to length scales of less than 10pc in some objects. Our data…
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 structure of the nuclear stellar cluster of the Milky Way
R. Schoedel, A. Eckart, T. Alexander +8
We present high-resolution seeing limited and AO NIR imaging observations of the stellar cluster within about one parsec of Sgr A*, the massive black hole at the centre of the Milk…
A mid-infrared spectroscopic study of submillimeter galaxies: luminous starbursts at high redshift
E. Valiante, D. Lutz, E. Sturm +4
We present rest frame mid-infrared spectroscopy of a sample of 13 submillimeter galaxies, obtained using the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope. The s…
The Position of Sagittarius A*: III. Motion of the Stellar Cusp
M. J. Reid, K. M. Menten, S. Trippe +2
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 wavel…
Eddington limited starbursts in the central 10pc of AGN, and the Torus in NGC1068
R. Davies, R. Genzel, L. Tacconi +2
We present results from a survey of nearby AGN using the near infrared adaptive optics integral field spectrograph SINFONI. These data enable us to probe the distribution and kinem…
Intense Star-formation and Feedback at High Redshift: Spatially-resolved Properties of the z=2.6 Submillimeter Galaxy SMMJ14011+0252
N. P. H. Nesvadba, M. D. Lehnert, R. Genzel +9
We present a detailed analysis of the spatially-resolved properties of the lensed submillimeter galaxy SMMJ14011+0252 at z=2.56, combining deep near-infrared integral-field data ob…
Mid-Infrared Diagnostics of LINERs
E. Sturm, D. Rupke, A. Contursi +12
We report results from the first mid-infrared spectroscopic study of a comprehensive sample of 33 LINERs, observed with the Spitzer Space Telescope. We compare the properties of tw…
Host dynamics and origin of Palomar-Green QSOs
K. M. Dasyra, L. J. Tacconi, R. I. Davies +7
We present host-galaxy velocity dispersions of 12 local (mainly Palomar-Green) quasi-stellar objects (QSOs) measured directly from the stellar CO absorption features in the H band.…
Star Formation and Molecular Gas in AGN
R. Davies, R. Genzel, L. Tacconi +2
We present initial results from a survey of nearby AGN using the near infrared adaptive optics integral field spectrograph SINFONI. These data enable us to probe the distribution a…
Polarimetry of near-infrared flares from Sagittarius A*
A. Eckart, R. Schoedel, L. Meyer +3
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 th…