The K2 and TESS Synergy. I. Updated Ephemerides and Parameters for K2-114, K2-167, K2-237, and K2-261
Article
Article Title | The K2 and TESS Synergy. I. Updated Ephemerides and Parameters for K2-114, K2-167, K2-237, and K2-261 |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Ikwut-Ukwa, Mma (Author), Rodriguez, Joseph E. (Author), Bieryla, Allyson (Author), Vanderburg, Andrew (Author), Mocnik, Teo (Author), Kane, Stephen R. (Author), Quinn, Samuel N. (Author), Colon, Knicole D. (Author), Zhou, George (Author), Eastman, Jason D. (Author), Huang, Chelsea X. (Author), Latham, David W. (Author), Dotson, Jessie (Author), Jenkins, Jon M. (Author), Ricker, George R. (Author), Seager, Sara (Author), Vanderspek, Roland K. (Author), Winn, Joshua N. (Author), Barclay, Thomas (Author), Barentsen, Geert (Author), Berta-Thompson, Zachory (Author), Charbonneau, David (Author), Dragomir, Diana (Author), Daylan, Tansu (Author), Gunther, Maximilian N. (Author), Hedges, Christina (Author), Henze, Christopher E. (Author), McDermott, Scott (Author), Schlieder, Joshua E. (Author), Quintana, Elisa V. (Author), Smith, Jeffrey C. (Author), Twicken, Joseph D. (Author) and Yahalomi, Daniel A. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 160 (5), pp. 1-13 |
Article Number | 209 |
Number of Pages | 13 |
Year | 2020 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/aba964 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/aba964 |
Abstract | Although the Transiting Exoplanet Survey Satellite (TESS) primary mission observed the northern and southern ecliptic hemispheres, generally avoiding the ecliptic, and the Kepler space telescope during the K2 mission could only observe near the ecliptic, many of the K2 fields extend far enough from the ecliptic plane that sections overlap with TESS fields. Using photometric observations from both K2 and TESS, combined with archival spectroscopic observations, we globally modeled four known planetary systems discovered by K2 that were observed in the first year of the primary TESS mission. Specifically, we provide updated ephemerides and system parameters for K2-114 b, K2-167 b, K2-237 b, and K2-261 b. These were some of the first K2 planets to be observed by TESS in the first year and include three Jovian sized planets and a sub-Neptune with orbital periods less than 12 days. In each case, the updated ephemeris significantly reduces the uncertainty in prediction of future times of transit, which is valuable for planning observations with the James Webb Space Telescope and other future facilities. The TESS extended mission is expected to observe about half of the K2 fields, providing the opportunity to perform this type of analysis on a larger number of systems. |
Keywords | Exoplanets; Transit photometry; Transits; Radial velocity; Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
Contains Sensitive Content | Contains sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Center for Astrophysics Harvard and Smithsonian, United States |
University of Texas at Austin, United States | |
University of California, United States | |
NASA Goddard Space Flight Center, United States | |
Massachusetts Institute of Technology, United States | |
NASA Ames Research Center, United States | |
Princeton University, United States | |
University of Colorado Boulder, United States | |
University of New Mexico, United States | |
National Aeronautics and Space Administration (NASA), United States | |
Proto-Logic Consulting, United States |
https://research.usq.edu.au/item/q6x44/the-k2-and-tess-synergy-i-updated-ephemerides-and-parameters-for-k2-114-k2-167-k2-237-and-k2-261
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