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Observations of the gas cloud G2 in the Galactic Center
Stefan Gillessen, Reinhard Genzel, Tobias K. Fritz +6
In 2011, we discovered a compact gas cloud ("G2") with roughly three Earth masses that is falling on a near-radial orbit toward the massive black hole in the Galactic Center. The o…
Hydrodynamical simulations of a compact source scenario for G2
A. Ballone, M. Schartmann, A. Burkert +6
The origin of the dense gas cloud G2 discovered in the Galactic Center (Gillessen et al. 2012) is still a debated puzzle. G2 might be a diffuse cloud or the result of an outflow fr…
The Nuclear Cluster of the Milky Way: Total Mass and Luminosity
Tobias K. Fritz, Sotiris Chatzopoulos, Ortwin Gerhard +6
Here we present the fundamental properties of the nuclear cluster of the Milky Way. First, we derive its structural properties by constructing a density map of the central 1000'' u…
Massive binaries in the vicinity of Sgr A*
O. Pfuhl, T. Alexander, S. Gillessen +5
A long-term spectroscopic and photometric survey of the most luminous and massive stars in the vicinity of the super-massive black hole Sgr A* revealed two new binaries; a long-per…
Pericenter passage of the gas cloud G2 in the Galactic Center
Stefan Gillessen, Reinhard Genzel, Tobias K Fritz +6
We have further followed the evolution of the orbital and physical properties of G2, the object currently falling toward the massive black hole in the Galactic Center on a near-rad…
Hydrodynamical simulations of a compact source scenario for the Galactic Center cloud G2
A. Ballone, M. Schartmann, A. Burkert +6
The origin of the dense gas cloud G2 discovered in the Galactic Center (Gillessen et al. 2012) is still a debated puzzle. G2 might be a diffuse cloud or the result of an outflow fr…