Constraints on the multiplicity of the most massive stars known: R136 a1, a2, a3, and c

Open Access

Fig. 1

Image of the central 3″ × 5″ (≈0.7 × 1.2 parsec) core of R 136 taken in 2009 with the HST’s Wide Field Camera 3 (WFC3) in the ultraviolet and visible light (UVIS) Channel with the F555W filter (λ₀ ≈ 5500 Å, proposai ID 11360). Marked are the positions of our four targets and the two slit positions used to acquire the data.

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