Fig. 1
Spatial distribution of the early-type star candidates found in Nishiyama & Schödel (2013, blue circles and ID numbers from the mentioned work) overplotted on a 2.25 μm narrow-band image (VLT/ISAAC). Spectra for 20 of the candidates were obtained with Subaru/IRCS (green circles). The large cyan circle delimits a region within 0.5 pc (12.̋9) in projection from Sgr A*. Spectra for five red giants were also obtained as a reference (red circles). Magenta arrows represent intermediate-age (50 Myr–500 Myr) stars (see Sects. 3 and 4).
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