Near-resonance in a System of Sub-Neptunes from TESS
Article
Article Title | Near-resonance in a System of Sub-Neptunes from TESS |
---|---|
ERA Journal ID | 1048 |
Article Category | Article |
Authors | Quinn, Samuel N. (Author), Becker, Juliette C. (Author), Rodriguez, Joseph E. (Author), Hadden, Sam (Author), Huang, Chelsea X. (Author), Morton, Timothy D. (Author), Adams, Fred C. (Author), Armstrong, David (Author), Eastman, Jason D. (Author), Horner, Jonathan (Author), Kane, Stephen R. (Author), Lissauer, Jack J. (Author), Twicken, Joseph D. (Author), Vanderburg, Andrew (Author), Wittenmyer, Rob (Author), Ricker, George R. (Author), Vanderspek, Roland K. (Author), Latham, David W. (Author), Seager, Sara (Author), Winn, Joshua N. (Author), Jenkins, Jon M. (Author), Agol, Eric (Author), Barkaoui, Khalid (Author), Beichman, Charles A. (Author), Bouchy, François (Author), Bouma, L. G. (Author), Burdanov, Artem (Author), Campbell, Jennifer (Author), Carlino, Roberto (Author), Cartwright, Scott M. (Author), Charbonneau, David (Author), Christiansen, Jessie L. (Author), Ciardi, David (Author), Collins, Karen A. (Author), Collins, Kevin I. (Author), Conti, Dennis M. (Author), Crossfield, Ian J. M. (Author), Daylan, Tansu (Author), Dittmann, Jason (Author), Doty, John (Author), Dragomir, Diana (Author), Ducrot, Elsa (Author), Gillon, Michael (Author), Glidden, Ana (Author), Goeke, Robert F. (Author), Gonzales, Erica J. (Author), Helminiak, Krzysztof G. (Author), Horch, Elliott P. (Author), Howell, Steve B. (Author), Jehin, Emmanuel (Author), Jensen, Eric L. N. (Author), Kielkopf, John F. (Author), Kristiansen, Martti H. (Author), Law, Nicholas (Author), Mann, Andrew W. (Author), Marmier, Maxime (Author), Matson, Rachel A. (Author), Matthews, Elisabeth (Author), Mazeh, Tsevi (Author), Mori, Mayuko (Author), Murgas, Felipe (Author), Murray, Catriona (Author), Narita, Norio (Author), Nielsen, Louise D. (Author), Ottoni, Gaël (Author), Palle, Enric (Author), Pawlaszek, Rafał (Author), Pepe, Francesco (Author), Pitogo de Leon, Jerome (Author), Pozuelos, Francisco J. (Author), Relles, Howard M. (Author), Schlieder, Joshua E. (Author), Sebastian, Daniel (Author), Segransan, Damien (Author), Shporer, Avi (Author), Stassun, Keivan G. (Author), Tamura, Motohide (Author), Udry, Stéphane (Author), Waite, Ian (Author), Winters, Jennifer G. (Author) and Ziegler, Carl (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 158 (5), pp. 1-16 |
Article Number | 177 |
Number of Pages | 16 |
Year | 2019 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/ab3f2b |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/ab3f2b |
Abstract | We report the Transiting Exoplanet Survey Satellite detection of a multi-planet system orbiting the V = 10.9 K0 dwarf TOI-125. We find evidence for up to five planets, with varying confidence. Three transit signals with high signal-to-noise ratio correspond to sub-Neptune-sized planets (2.76, 2.79, and 2.94 R⊕), and we statistically validate the planetary nature of the two inner planets (Pb = 4.65 days, Pc = 9.15 days). With only two transits observed, we report the outer object (P.03 = 19.98 days) as a planet candidate with high signal-to-noise ratio. We also detect a candidate transiting super-Earth (1.4 R⊕) with an orbital period of only 12.7 hr and a candidate Neptune-sized planet (4.2 R⊕) with a period of 13.28 days, both at low signal-to-noise ratio. This system is amenable to mass determination via radial velocities and transit-timing variations, and provides an opportunity to study planets of similar size while controlling for age and environment. The ratio of orbital periods between TOI-125 b and c (Pc/Pb = 1.97) is slightly lower than an exact 2:1 commensurability and is atypical of multiple planet systems from Kepler, which show a preference for period ratios just wide of first-order period ratios. A dynamical analysis refines the allowed parameter space through stability arguments and suggests that despite the nearly commensurate periods, the system is unlikely to be in resonance. |
Keywords | Transit photometry; Mini Neptunes; Super Earths; Exoplanets; Astrophysics - Earth and Planetary Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | For access to this article, please click on the URL link provided. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Center for Astrophysics Harvard and Smithsonian, United States |
University of Michigan, United States | |
Massachusetts Institute of Technology, United States | |
University of Florida, United States | |
University of Warwick, United Kingdom | |
Centre for Astrophysics | |
University of California, United States | |
NASA Ames Research Center, United States | |
SETI Institute, United States | |
University of Texas at Austin, United States | |
Princeton University, United States | |
University of Washington, United States | |
Cadi Ayyad University, Morocco | |
National Aeronautics and Space Administration (NASA), United States | |
University of Geneva, Switzerland | |
University of Liege, Belgium | |
Proto-Logic Consulting, United States | |
California Institute of Technology (Caltech), United States | |
Vanderbilt University, United States | |
American Association of Variable Star Observers, United States | |
Noqsi Aerospace, United States | |
Technical University of Denmark, Denmark | |
Southern Connecticut State University, United States | |
Swarthmore College, United States | |
School of Mathematics, Physics and Computing | |
University of North Carolina, United States | |
Tel Aviv University, Israel | |
University of Tokyo, Japan | |
Institute of Astrophysics of the Canary Islands, Spain | |
University of Cambridge, United Kingdom | |
National Astronomical Observatory of Japan, Japan | |
Polish Academy of Sciences, Poland | |
NASA Goddard Space Flight Center, United States | |
Astrobiology Center, Japan |
https://research.usq.edu.au/item/q574y/near-resonance-in-a-system-of-sub-neptunes-from-tess
204
total views57
total downloads2
views this month0
downloads this month