On the Search for Transits of the Planets Orbiting Gliese 876
Article
Article Title | On the Search for Transits of the Planets Orbiting Gliese 876 |
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Article Category | Article |
Authors | Shankland, P. D. (Author), Rivera, E. J. (Author), Laughlin, G. (Author), Blank, D. L. (Author), Price, A. (Author), Gary, B. (Author), Bissinger, R. (Author), Ringwald, F. (Author), White, G. (Author), Henry, G. W. (Author), McGee, P. (Author), Wolf, A. S. (Author), Carter, B. (Author), Lee, S. (Author), Biggs, J. (Author), Monard, B. (Author) and Ashley, M. C. B. (Author) |
Journal Title | Astrophysical Journal |
Journal Citation | 653 (1), pp. 700-707 |
Number of Pages | 8 |
Year | 2006 |
Place of Publication | United States |
Digital Object Identifier (DOI) | https://doi.org/10.1086/508562 |
Web Address (URL) | http://www.journals.uchicago.edu/doi/pdf/10.1086/508562 |
Abstract | We report the results of a globally coordinated photometric campaign to search for transits by the P ∼ 30 day and P ∼ 60 day outer planets of the three-planet system orbiting the nearby M dwarf Gl 876. These two planets experience strong mutual perturbations, which necessitate the use of a dynamical (four-body) model to compute transit ephemerides for the system. Our photometric data have been collected from published archival sources, as well as from our photometric campaigns that were targeted to specific transit predictions. Our analysis indicates that transits by planet c (P ∼ 30 days) do not currently occur, in concordance with the best-fit i = 50° coplanar configuration obtained by dynamical fits to the most recent radial velocity data for the system. Transits by planet b (P ∼ 60 day) are not entirely ruled out by our observations, but our data indicate that it is very unlikely that they occur. Our experience with the Gl 876 system suggests that a distributed ground-based network of small telescopes can be used to search for transits of very low mass M stars by terrestrial-sized planets. © 2006. The American Astronomical Society, All rights reserved. |
Keywords | Planetary systems; Planets and satellites: general; Stars: individual (Gliese 876) |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Funder | Directorate for Education and Human Resources |
Byline Affiliations | James Cook University |
University of California, United States | |
Ford Astronomical Data and Research Center, United States | |
California State University Fresno, United States | |
Tennessee State University, United States | |
University of Adelaide | |
Centre for Astronomy, Solar Radiation and Climate | |
Anglo-Australian Observatory, Australia | |
Perth Observatory, Australia | |
South African Astronomical Observatory, South Africa | |
University of New South Wales |
https://research.usq.edu.au/item/9y0q3/on-the-search-for-transits-of-the-planets-orbiting-gliese-876
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