학술논문
TESS-Keck Survey XIV: Two giant exoplanets from the Distant Giants Survey
Document Type
Working Paper
Author
Van Zandt, Judah E.; 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; Mocnik, Teo; Murphy, Joseph M. Akana; Pidhorodetska, Daria; Polanski, Alex S.; Ricker, George R.; Rosenthal, Lee J.; Rubenzahl, Ryan A.; Seager, Sara; Scarsdale, Nicholas; Turtleboom, Emma V.; Vanderspek, Roland; Winn, Joshua N.
Source
Subject
Language
Abstract
We present the Distant Giants Survey, a three-year radial velocity (RV) campaign to measure P(DG|CS), the conditional occurrence of distant giant planets (DG; M_p ~ 0.3 - 13 M_J, P > 1 year) in systems hosting a close-in small planet (CS; R_p < 10 R_E). 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 Msin i = 0.573 +/- 0.074 M_J, P = 502 +/- 16 days, and e < 0.27, while for TOI-1694 c, Msin 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-day transiting planet TOI-1694 b by measuring a true mass of M = 26.1 +/- 2.2 M_E. We also confirmed the 3.8-day transiting planet TOI-1694 b by measuring a true mass of M = 26.1 +/- 2.2 M_E. 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.