Image Details
Caption: Figure 4.
Properties of companions to TESS planet candidate hosts resolved by SOAR, colored by the logarithm of each system’s Gaia DR2 RUWE value, a metric quantifying the quality of the Gaia astrometric solution. Companions in systems with null RUWE values are indicated by blue triangles. While Gaia does not resolve close binaries (ρ < 0.″7), the high or null RUWE value may be used to infer the existence of a companion star. This method is successful with an accuracy of 86% in our survey.
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