Following up TESS Single Transits with Archival Photometry and Radial Velocities
Article
Article Title | Following up TESS Single Transits with Archival Photometry and Radial Velocities |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Yao, Xinyu (Author), Pepper, Joshua (Author), Gaudi, B. Scott (Author), Dalba, Paul A. (Author), Burt, Jennifer A. (Author), Wittenmyer, Robert A. (Author), Dragomir, Diana (Author), Rodriguez, Joseph E. (Author), Villanueva, Steven, Jr. (Author), Stevens, Daniel J. (Author), Stassun, Keivan G. (Author) and James, David J. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 161 (3), pp. 1-14 |
Article Number | 124 |
Number of Pages | 14 |
Year | 2021 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/abdb30 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/abdb30 |
Abstract | NASA's Transiting Exoplanet Survey Satellite (TESS) mission is expected to discover hundreds of planets via single transits first identified in their light curves. Determining the orbital period of these single-transit candidates typically requires a significant amount of follow-up work to observe a second transit or measure a radial velocity (RV) orbit. In Yao et al., we developed simulations that demonstrated the ability to use archival photometric data in combination with TESS to 'precover' the orbital period for these candidates with a precision of several minutes, assuming circular orbits. In this work, we incorporate updated models for TESS single transits, allowing for eccentric orbits, along with an updated methodology to improve the reliability of the results. Additionally, we explore how RV observations can be used to follow up single-transit events, using strategies distinct from those employed when the orbital period is known. We find that the use of an estimated period based on a circular orbit to schedule reconnaissance RV observations can efficiently distinguish eclipsing binaries from planets. For candidates that pass reconnaissance RV observations, we simulate RV monitoring campaigns that enable one to obtain an approximate orbital solution. We find that this method can regularly determine the orbital periods for planets more massive than 0.5 M<SUB>J</SUB> with orbital periods as long as 100 days. |
Keywords | Transit photometry; Radial velocity; Ground-based astronomy; Exoplanet detection methods; Astronomy data analysis; 1709; 1332; 686; 489; 1858; 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 | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Lehigh University, United States |
Ohio State University, United States | |
University of California, United States | |
California Institute of Technology (Caltech), United States | |
Centre for Astrophysics | |
University of New Mexico, United States | |
Michigan State University, United States | |
Massachusetts Institute of Technology, United States | |
Pennsylvania State University, United States | |
Vanderbilt University, United States | |
Astraveo, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6x89/following-up-tess-single-transits-with-archival-photometry-and-radial-velocities
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