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

February 2023 • 2023AJ....165...60V

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

Abstract • 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.

Links

• PREPRINT http://arxiv.org/abs/2209.06958
• ELECTR https://doi.org/10.3847%2F1538-3881%2Faca6ef
• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2023AJ....165...60V
• PDF https://iopscience.iop.org/article/10.3847/1538-3881/aca6ef/pdf
• DATA http://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/165/60
• DATA https://archive.gemini.edu/searchform/publication=2023AJ....165...60V
• DATA https://archive.stsci.edu/mastbibref.php?bibcode=2023AJ....165...60V