The Astronomical Journal (Jan 2023)

TESS-Keck Survey. XIV. Two Giant Exoplanets from the Distant Giants Survey

  • Judah Van Zandt,
  • Erik A. Petigura,
  • Mason MacDougall,
  • Gregory J. Gilbert,
  • Jack Lubin,
  • Thomas Barclay,
  • Natalie M. Batalha,
  • Ian J. M. Crossfield,
  • Courtney Dressing,
  • Benjamin Fulton,
  • Andrew W. Howard,
  • Daniel Huber,
  • Howard Isaacson,
  • Stephen R. Kane,
  • Paul Robertson,
  • Arpita Roy,
  • Lauren M. Weiss,
  • Aida Behmard,
  • Corey Beard,
  • Ashley Chontos,
  • Fei Dai,
  • Paul A. Dalba,
  • Tara Fetherolf,
  • Steven Giacalone,
  • Christopher E. Henze,
  • Michelle L. Hill,
  • Lea A. Hirsch,
  • Rae Holcomb,
  • Steve B. Howell,
  • Jon M. Jenkins,
  • David W. Latham,
  • Andrew Mayo,
  • Ismael Mireles,
  • Teo Močnik,
  • Joseph M. Akana Murphy,
  • Daria Pidhorodetska,
  • Alex S. Polanski,
  • George R. Ricker,
  • Lee J. Rosenthal,
  • Ryan A. Rubenzahl,
  • S. Seager,
  • Nicholas Scarsdale,
  • Emma V. Turtelboom,
  • Roland Vanderspek,
  • Joshua N. Winn

DOI
https://doi.org/10.3847/1538-3881/aca6ef
Journal volume & issue
Vol. 165, no. 2
p. 60

Abstract

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We present the Distant Giants Survey, a three-year radial velocity campaign to measure P(DG∣CS), the conditional occurrence of distant giant planets (DG; M _p ∼ 0.3–13 M _J , P > 1 yr) in systems hosting a close-in small planet (CS; R _p < 10 R _⊕ ). For the past two years, we have monitored 47 Sun-like stars hosting small transiting planets detected by TESS. We present the selection criteria used to assemble our sample and report the discovery of two distant giant planets, TOI-1669 b and TOI-1694 c. For TOI-1669 b we find that $M\sin i=0.573\pm 0.074\,\,{M}_{{\rm{J}}}$ , P = 502 ± 16 days, and e < 0.27, while for TOI-1694 c, $M\sin i=1.05\pm 0.05\,\,{M}_{{\rm{J}}}$ , P = 389.2 ± 3.9 days, and e = 0.18 ± 0.05. We also confirmed the 3.8 days transiting planet TOI-1694 b by measuring a true mass of M = 26.1 ± 2.2 M _⊕ . At the end of the Distant Giants Survey, we will incorporate TOI-1669 b and TOI-1694 c into our calculation of P(DG∣CS), a crucial statistic for understanding the relationship between outer giants and small inner companions.

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