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Status and new operation modes of the versatile VLT/NACO
Julien H. V. Girard, Markus Kasper, Sascha P. Quanz +14
This paper aims at giving an update on the most versatile adaptive optics fed instrument to date, the well known and successful NACO . Although NACO is only scheduled for about two…
Coordinated NIR/mm observations of flare emission from Sagittarius A*
D. Kunneriath, G. Witzel, A. Eckart +28
We report on a successful, simultaneous observation and modelling of the millimeter (mm) to near-infrared (NIR) flare emission of the Sgr A* counterpart associated with the superma…
Cometary shaped sources at the Galactic Center - Evidence for a wind from the central 0.2 pc
K. Muzic, A. Eckart, R. Schoedel +2
In 2007 we reported two cometary shaped sources in the vicinity of Sgr A* (0.8" and 3.4" projected distance), named X7 and X3. The symmetry axes of the two sources are aligned to w…
Luminosity-variation independent location of the circum-nuclear, hot dust in NGC 4151
Jorg-Uwe Pott, Matt A. Malkan, Moshe Elitzur +4
After recent sensitivity upgrades at the Keck Interferometer (KI), systematic interferometric 2um studies of the innermost dust in nearby Seyfert nuclei are within observational re…
The extreme luminosity states of Sagittarius A*
N. Sabha, G. Witzel, A. Eckart +10
We discuss mm-wavelength radio, 2.2-11.8um NIR and 2-10 keV X-ray light curves of the super massive black hole (SMBH) counterpart of Sagittarius A* (SgrA*) near its lowest and high…