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TOI-561 b: A Low-density Ultra-short-period “Rocky” Planet around a Metal-poor Star
Published 2023-01-01“…We present new simultaneous radial velocity (RV) measurements from Gemini-N/MAROON-X and Keck/HIRES, which we combined with literature RVs to derive a mass of M _b = 2.24 ± 0.20 M _⊕ . …”
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