On the double-planet system around HD 83443
Article
Article Title | On the double-planet system around HD 83443 |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Carter, Brad D. (Author), Butler, R. Paul (Author), Marcy, Geoffrey W. (Author), Vogt, Steven S. (Author), Tinney, C. G. (Author), Jones, Hugh R. A. (Author), McCarthy, Chris (Author), Penny, Alan J. (Author) and Apps, Kevin (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 578 (11), pp. 565-572 |
Number of Pages | 8 |
Year | 2002 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.1086/342471 |
Web Address (URL) | https://iopscience.iop.org/article/10.1086/342471 |
Abstract | The Geneva group has reported two Saturn-mass planets orbiting HD 83443 (KO V) with periods of 2.98 and 29.8 days. The two planets have raised interest in their dynamics because of the possible 10:1 orbital resonance and the strong gravitational interactions. We report precise Doppler measurements of HD 83443 obtained with the Keck/HIRES and the Anglo-Australian Telescope (AAT) UCLES spectrometers. These measurements strongly confirm the inner planet with a period of 2.985 days, with orbital parameters in very good agreement with those of the Geneva group. However, these Doppler measurements show no evidence of the outer planet, at thresholds of one-fourth (3 m s -1) of the reported velocity amplitude of 13.8 m s -1. Thus, the existence of the outer planet is in question. Indeed, the current Doppler measurements reveal no evidence of any second planet with a period less than a year. |
Keywords | planetary systems; stars; HD 83443 |
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 | For access to this article, please click on the URL link provided. |
Byline Affiliations | Department of Biological and Physical Sciences |
Carnegie Institution of Washington, United States | |
University of California, United States | |
Anglo-Australian Observatory, Australia | |
Liverpool John Moores University, United Kingdom | |
Rutherford Appleton Laboratory, United Kingdom | |
University of Sussex, United Kingdom | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q064q/on-the-double-planet-system-around-hd-83443
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