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SOAR TESS Survey. I. Sculpting of TESS Planetary Systems by Stellar Companions

  • Authors: Carl Ziegler, Andrei Tokovinin, César Briceño, James Mang, Nicholas Law, and Andrew W. Mann

2020 The Astronomical Journal 159 19.

  • Provider: AAS Journals

Caption: Figure 8.

Completeness-corrected companion fraction per 0.5 dex bins in projected separation for small and large TESS planet candidate hosts observed in this survey. For reference, the separation distribution of field binaries from Raghavan et al. (2010) is included. Both populations of TESS planet hosts have suppressed rates of close binaries but diverging binary rates at wide projected separations. Large planets (Rp > 9 R) are approximately 3.5× more likely to be found in a wide binary, compared to field stars. Conversely, small planets are 2× less likely to be found in a wide binary.

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