Two Massive Jupiters in Eccentric Orbits from the TESS Full-frame Images
Article
Article Title | Two Massive Jupiters in Eccentric Orbits from the TESS Full-frame Images |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Ikwut-Ukwa, Mma (Author), Rodriguez, Joseph E. (Author), Quinn, Samuel N. (Author), Zhou, George (Author), Vanderburg, Andrew (Author), Ali, Asma (Author), Bunten, Katya (Author), Gaudi, B. Scott (Author), Latham, David W. (Author), Howell, Steve B. (Author), Huang, Chelsea X. (Author), Bieryla, Allyson (Author), Collins, Karen A. (Author), Carmichael, Theron W. (Author), Rabus, Markus (Author), Eastman, Jason D. (Author), Collins, Kevin I. (Author), Tan, Thiam-Guan (Author), Schwarz, Richard P. (Author), Myers, Gordon (Author), Stockdale, Chris (Author), Kielkopf, John F. (Author), Radford, Don J. (Author), Oelkers, Ryan J. (Author), Jenkins, Jon M. (Author), Ricker, George R. (Author), Seager, Sara (Author), Vanderspek, Roland K. (Author), Winn, Joshua N. (Author), Burt, Jennifer (Author), Butler, R. Paul (Author), Calkins, Michael L. (Author), Crane, Jeffrey D. (Author), Gnilka, Crystal L. (Author), Esquerdo, Gilbert A. (Author), Fong, William (Author), Kreidberg, Laura (Author), Mink, Jessica (Author), Rodriguez, David R. (Author), Schlieder, Joshua E. (Author), Shectman, Stephen (Author), Shporer, Avi (Author), Teske, Johanna (Author), Ting, Eric B. (Author), Villasenor, Jesus Noel (Author) and Yahalomi, Daniel A. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 163 (1), pp. 1-15 |
Article Number | 9 |
Number of Pages | 15 |
Year | 2022 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/ac2ee1 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/ac2ee1/meta |
Abstract | We report the discovery of two short-period massive giant planets from NASA's Transiting Exoplanet Survey Satellite (TESS). Both systems, TOI-558 (TIC 207110080) and TOI-559 (TIC 209459275), were identified from the 30 minute cadence full-frame images and confirmed using ground-based photometric and spectroscopic followup observations from TESS's follow-up observing program working group. We find that TOI-558 b, which transits an F-dwarf (M-* =1.349(-0.065)(+0.064) M-circle dot, R-* =1.496(-0.040)(+0.042) R-circle dot, T-eff = 6466(-93)(+95) K, age 1.79(-0.73)(+0.91) Gyr) with an orbital period of 14.574 days, has a mass of 3.61 +/- 0.15 M-J, a radius of 1.086(-0.038)(+0.041) R-J, and an eccentric (e = 0.300(-0.020)(+0.022)) orbit. TOI-559 b transits a G dwarf (M-* = 1.026 +/- 0.057 M-circle dot, R-* =1.233(-0.026)(+0.028) R-circle dot, T-eff = 5925(-76)(+85) K, age 6.8(-2.0)(+2.5) Gyr) in an eccentric (e = 0.151 +/- 0.011) 6.984 days orbit with a mass of 6.01(-0.23)(+0.24) M-J and a radius of 1.091(-0.025+)(0.028) R-J. Our spectroscopic follow up also reveals a long-term radial velocity trend for TOI-559, indicating a long-period companion. The statistically significant orbital eccentricity measured for each system suggests that these planets migrated to their current location through dynamical interactions. Interestingly, both planets are also massive (>3 M-J), adding to the population of massive giant planets identified by TESS. Prompted by these new detections of high-mass planets, we analyzed the known mass distribution of hot and warm Jupiters but find no significant evidence for multiple populations. TESS should provide a near magnitude-limited sample of transiting hot Jupiters, allowing for future detailed population studies. |
Keywords | Hot Jupiters (753); Exoplanets (498); Extrasolar gaseous planets (2172); Exoplanet astronomy (486); Transit photometry (1709); Photometry (1234); Exoplanet detection methods (489); Radial velocity (1332); Direct imaging (387); Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Center for Astrophysics Harvard and Smithsonian, United States |
Michigan State University, United States | |
University of Wisconsin-Madison, United States | |
Harvard-Smithsonian Centre for Astrophysics, United States | |
Ohio State University, United States | |
National Aeronautics and Space Administration (NASA), United States | |
Massachusetts Institute of Technology, United States | |
Academic Registrar's Office | |
Harvard University, United States | |
Las Cumbres Observatory, United States | |
George Mason University, United States | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
Patashnick Voorheesville Observatory, United States | |
American Association of Variable Star Observers, United States | |
Hazelwood Observatory, Australia | |
School of Mathematics, Physics and Computing | |
Brierfield Observatory, Australia | |
Vanderbilt University, United States | |
Princeton University, United States | |
California Institute of Technology (Caltech), United States | |
Carnegie Institution of Washington, United States | |
Max Planck Society, Germany | |
Space Telescope Science Institute, United States | |
NASA Goddard Space Flight Center, United States | |
NASA Ames Research Center, United States | |
Funding source | Australian Research Council (ARC) Grant ID DE210101893 |
https://research.usq.edu.au/item/q7534/two-massive-jupiters-in-eccentric-orbits-from-the-tess-full-frame-images
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