Extended Data Fig. 6: Semi-major axis of the orbit of the B-star aB as a function of MB and MBH. | Nature

Extended Data Fig. 6: Semi-major axis of the orbit of the B-star aB as a function of MB and MBH.

From: A wide star–black-hole binary system from radial-velocity measurements

Extended Data Fig. 6

Here aB is calculated from Kepler’s third law for each pair of MB (B-star mass) and MBH (black-hole mass). The contours and colours both represent the values of aB. The white dashed lines in the contour plot outline a valid region for the semi-major axis of the B star. It comes from the limitations on MB, (7–9.1)M, and on MBH, (55–79)M. See Methods for details.

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