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Fig. 1

image

Field of view and spatial distribution of early-type stars in the MW nuclear star cluster. The black box shows the KMOS 64.̋9 × 43.̋3 field of view, i.e. 2.51 × 1.68 pc, the small square in the upper middle was not observed due to the inactive IFU 13. Blue lines are the equatorial coordinate grid with a spacing of 10′′. The dashed blue horizontal line denotes the orientation of the Galactic plane. 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 ×-symbols indicate new young star candidates, blue plus-symbols probable foreground stars. The red line denotes the line of nodes of the clockwise-rotating disk of young stars.

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