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Fig. 4.

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Summary of the central mass distribution in the GC, within 20× the apocenter radius of the S2 orbit, ≈5″. The filled blue circle is the central mass of 4.30 × 106M (for R0 = 8277 pc, and its 1σ uncertainty of 12 000 M), which our four-star fitting has established to lie within the 1200RS pericenter of S29. The black arrow denotes the 3σ upper limit of Mext(≤0.3″) of the sum of M and any extended Plummer mass of assumed scale radius 0.3″. The two open blue circles and two red filled squares show averages of enclosed masses within the semi-major axes of other S-stars and clock-wise disk stars. The magenta dashed line is the sum of M and the extended stellar mass distribution from the literature (e.g., Genzel et al. 2010; Alexander 2017; Schödel et al. 2018; Baumgardt et al. 2018). All data are in excellent agreement with a point mass (the MBH Sgr A*) and a star cluster with a power-law density slope γ ≈ 1.6 (Genzel et al. 2003; Gallego-Cano et al. 2018), consisting of main-sequence stars and a small contribution of giants. No extra component from dark matter or an intermediate mass black hole > 103M (GRAVITY Collaboration 2020) is required or compatible with the data.

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