TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion
Article
Article Title | TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Martin, David V. (Author), El-Badry, Kareem (Author), Hodzic, Vedad Kunovac (Author), Triaud, Amaury H. M. J. (Author), Angus, Ruth (Author), Birky, Jessica (Author), Foreman-Mackey, Daniel (Author), Hedges, Christina (Author), Montet, Benjamin T. (Author), Murphy, Simon J. (Author), Santerne, Alexandre (Author), Stassun, Keivan G. (Author), Stephan, Alexander P. (Author), Wang, Ji (Author), Benni, Paul (Author), Krushinsky, Vadim (Author), Chazov, Nikita (Author), Mishevskiy, Nikolay (Author), Ziegler, Carl (Author), Soubkiou, Abderahmane (Author), Benkhaldoun, Zouhair (Author), Boisse, Isabelle (Author), Battley, Matthew (Author), Miller, Nicola J. (Author), Caldwell, Douglas A. (Author), Collins, Karen (Author), Henze, Christopher E. (Author), Guerrero, Natalia M. (Author), Jenkins, Jon M. (Author), Latham, David W. (Author), Levine, Adam (Author), McDermott, Scott (Author), Mullally, Susan E. (Author), Ricker, George (Author), Seager, Sara (Author), Shporer, Avi (Author), Vanderburg, Andrew (Author), Vanderspek, Roland (Author) and Winn, Joshua N. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 507 (3), pp. 4132-4148 |
Number of Pages | 17 |
Year | 2021 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stab2129 |
Web Address (URL) | https://academic.oup.com/mnras/article/507/3/4132/6329054 |
Abstract | We present TOI-1259Ab, a 1.0RJup gas giant planet transiting a 0.71R⊙ K-dwarf on a 3.48 d orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of ∼1600 au from the planet host. Transits are observed in nine TESS sectors and are 2.7 per cent deep – among the deepest known – making TOI-1259Ab a promising target for atmospheric characterization. Our follow-up radial velocity measurements indicate a variability of semiamplitude K=71ms−1, implying a planet mass of 0.44MJup. By fitting the spectral energy distribution of the white dwarf, we derive a total age of 4.08+1.21−0.53 Gyr for the system. The K dwarf’s light curve reveals rotational variability with a period of 28 d, which implies a gyrochronology age broadly consistent with the white dwarf’s total age. |
Keywords | planets and satellites: formation; binaries: eclipsing; stars: individual (TOI-1259); stars: low-mass; stars: rotation; Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2021 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Ohio University, United States |
University of California, United States | |
University of Birmingham, United Kingdom | |
American Museum of Natural History, United States | |
University of Washington, United States | |
Flatiron Institute, United States | |
National Aeronautics and Space Administration (NASA), United States | |
University of New South Wales | |
University of Sydney | |
Aix-Marseille University, France | |
Vanderbilt University, United States | |
Ohio State University, United States | |
Acton Sky Portal, United States | |
Ural Federal University, Russia | |
Pulkovo Observatory, Russia | |
Stephen F. Austin State University, United States | |
Cadi Ayyad University, Morocco | |
Keele University, United Kingdom | |
University of Warwick, United Kingdom | |
NASA Ames Research Center, United States | |
SETI Institute, United States | |
Massachusetts Institute of Technology, United States | |
Harvard-Smithsonian Centre for Astrophysics, United States | |
Proto-Logic Consulting, United States | |
Space Telescope Science Institute, United States | |
University of Wisconsin-Madison, United States | |
Princeton University, United States |
https://research.usq.edu.au/item/q7399/toi-1259ab-a-gas-giant-planet-with-2-7-per-cent-deep-transits-and-a-bound-white-dwarf-companion
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