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TESS-Keck Survey XIV: Two giant exoplanets from the Distant Giants Survey

Authors :
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
Publication Year :
2022

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 ± 0.074 M J , P = 502 ± 16 days, and e < 0.27, while for TOI-1694 c, M sin i = 1.05 ± 0.05 M 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.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....b9348d36ce24fa23834523db5cca01b0