학술논문
An Eccentric Massive Jupiter Orbiting a Subgiant on a 9.5-day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images
Document Type
Report
Author
Joseph E. Rodriguez; Samuel N. Quinn; Chelsea X. Huang; Andrew Vanderburg; Kaloyan Penev; Rafael Brahm; Andres Jordan; Mma Ikwut Ukwa; Shelly Tsirulik; David W. Latham; Keivan G. Stassun; Avi Shporer; Carl Ziegler; Elisabeth Matthews; Jason D. Eastman; B. Scott Gaudi; Karen A. Collins; Natalia Guerrero; Howard M. Relles; Thomas Barclay; Natalie M. Batalha; Perry Berlind; Allyson Bieryla; L. G. Bouma; Patricia T Boyd; Jennifer Burt; Michael L. Calkins; Jessie Christiansen; David R. Ciardi; Knicole D Colon; Dennis M. Conti; Ian J. M. Crossfield; Tansu Daylan; Jason Dittmann; Diana Dragomir; Scott Dynes; Nestor Espinoza; Gilbert A. Esquerdo; Zahra Essack; Aylin Garcia Soto; Ana Glidden; Maximilian N. Gunther; Thomas Henning; Jon M Jenkins; John F. Kielkopf; Akshata Krishnamurthy; Nicholas M. Law; Alan M. Levine; Pablo Lewin; Andrew W. Mann; Edward H. Morgan; Robert L Morris; Ryan J. Oelkers; Martin Paegert; Joshua Pepper; Elisa V Quintana; George R. Ricker; Pamela Rowden; Sara Seager; Paula Sarkis; Joshua E Schlieder; Lizhou Sha; Andrei Tokovinin; Guillermo Torres; Roland K. Vanderspek; Steven Villanueva Jr; Jesus Noel Villasenor; Joshua N. Winn; Bill Wohler; Ian Wong; Daniel A. Yahalomi; Liang Yu; Zhuchang Zhan; George Zhou
Source
The Astronomical Journal. 157(5)
Subject
Language
English
ISSN
1538-3881
0004-6256
0004-6256
Abstract
We report the discovery of TOI-172 b from the Transiting Exoplanet Survey Satellite (TESS) mission, a massive hot Jupiter transiting a slightly evolved G star with a 9.48-day orbital period. This is the first planet to be confirmed from analysis of only the TESS full frame images, because the host star was not chosen as a two-minute cadence target. From a global analysis of the TESS photometry and follow-up observations carried out by the TESS Follow-up Observing Program Working Group, TOI-172 (TIC 29857954) is a slightly evolved star with an effective temperature of T(eff) = 5645 ± 50 K, a mass of M(⋆) =1.128(sub -0.061, sup +0.065) M(☉), radius of R(⋆) =1.777(sub -0.044, sup +0.047) R(☉), a surface gravity of log g(⋆) =3.993(sub -0.028, sup +0.027), and an age of 7.4(sub -1.5, sup +1.6) Gyr. Its planetary companion (TOI-172 b) has a radius of R(P) =0.965(sub -0.029, sup +0.032) R(J), a mass of M(P) =5.42(sub -0.20, sup +0.22) M(J), and is on an eccentric orbit (e=0.3806(sub -0.0090, sup +0.0093)). TOI-172 b is one of the few known massive giant planets on a highly eccentric short-period orbit. Future study of the atmosphere of this planet and its system architecture offer opportunities to understand the formation and evolution of similar systems.