The Milky Way nuclear star cluster

CO absorption line map of radial velocity. The coordinates are centred on Sgr A* and along the Galactic plane. The plus sign marks the position of Sgr A*. The velocity is in the local standard of rest, Galactic North is up, Galactic East is left. Zoom Image
CO absorption line map of radial velocity. The coordinates are centred on Sgr A* and along the Galactic plane. The plus sign marks the position of Sgr A*. The velocity is in the local standard of rest, Galactic North is up, Galactic East is left. [less]
Field of view and spatial distribution of early-type stars in the Milky Way nuclear star cluster. The black box shows theKMOS 2.51 pc × 1.68 pc. The black cross shows the position of Sgr A*. The underlying image is from HST/NICMOS (Dong et al. 2011), aligned along Galactic coordinates. Yellow diamond symbols denote confirmed Wolf-Rayet (WR) and emission-line stars, cyan squares are stars with featureless spectra, green circles denote O/B stars. Red x-symbols indicate new young star candidates, blue plus-symbols probable foreground stars. Zoom Image

Field of view and spatial distribution of early-type stars in the Milky Way nuclear star cluster. The black box shows the
KMOS 2.51 pc × 1.68 pc. The black cross shows the position of Sgr A*. The underlying image is from HST/NICMOS (Dong et al. 2011), aligned along Galactic coordinates. Yellow diamond symbols denote confirmed Wolf-Rayet (WR) and emission-line stars, cyan squares are stars with featureless spectra, green circles denote O/B stars. Red x-symbols indicate new young star candidates, blue plus-symbols probable foreground stars.

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Anja studies the stellar kinematics of the Milky Way nuclear star cluster in integrated light towards the half-light radius (4.2pc). She runs axisymmetric Jeans models and triaxial Schwarzschild models to understand the large-scale kinematics of the Milky Way nuclear star cluster.
Anja uses near-infrared K-band spectroscopy obtained with KMOS (VLT) of single resolved stars to study the star formation history of the Milky Way nuclear star cluster. The data extends to a larger spatial scale than previous stellar populations studies of the Galactic centre.

For more details contact Anja Feldmeier-Krause.

 
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