The Galactic Center is an excellent laboratory for studying phenomena and physical
processes that may be occurring in many other galactic nuclei. The center of our Milky Way …

Some of the most luminous stars have sporadic, violent mass-loss events whose causes are
not understood. These evolved hot stars are called luminous blue variables (LB Vs), and …

▪ Abstract This review deals with the winds from “normal” hot stars such as O-stars, B-and A-
supergiants, and Central Stars of Planetary Nebulae with O-type spectra. The advanced …

We report the definite spectroscopic identification of≃ 40 OB supergiants, giants, and main-
sequence stars in the central parsec of the Galaxy. Detection of their absorption lines has …

The VIIth catalogue of galactic PopulationI Wolf–Rayet stars provides improved coordinates,
spectral types and bv photometry of known WR stars and adds 71 new WR stars to the …

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 …

▪ Abstract The inner few parsecs at the Galactic Center have come under intense scrutiny in
recent years, in part due to the exciting broad-band observations of this region, but also …

We report a new analysis of the stellar dynamics in the Galactic Centre, based on improved
sky and line-of-sight velocities for more than 100 stars in the central few arcseconds from the …

The central parsec around the supermassive black hole in the Galactic center (GC) hosts
more than 100 young and massive stars. Outside the central cusp (R∼ 1'') the majority of …

We report the first results of an extensive new study of the Galactic center stellar cluster. The
central parsec is powered by a cluster of about two dozen luminous and helium-rich blue …