Extra-solar planets around HD 196050, HD 216437 and HD 160691
Article
Article Title | Extra-solar planets around HD 196050, HD 216437 and HD 160691 |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Jones, Hugh R. A. (Author), Butler, R. Paul (Author), Marcy, Geoffery W. (Author), Tinney, Chris G. (Author), Penny, Alan J. (Author), McCarthy, Christopher N. (Author) and Carter, Brad D. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 337 (4), pp. 1170-1178 |
Number of Pages | 9 |
Year | 2002 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1046/j.1365-8711.2002.05787.x |
Web Address (URL) | https://academic.oup.com/mnras/article/337/4/1170/955512 |
Abstract | We report precise Doppler measurements of the stars HD 216437, HD 196050 and HD 160691 obtained with the Anglo-Australian Telescope using the UCLES spectrometer together with an iodine cell as part of the Anglo-Australian Planet Search. Our measurements reveal periodic Keplerian velocity variations that we interpret as evidence for planets in orbit around these solar type stars. HD 216437 has a period of 1294 ± 250 d, a semi-amplitude of 38 ± 3 m s−1 and an eccentricity of 0.33 ± 0.09. The minimum (M sin i) mass of the companion is 2.1 ± 0.3 MJUP and the semi-major axis is 2.4 ± 0.5 au. HD 196050 has a period of 1300 ± 230 d, a semi-amplitude of 49 ± 8 m s−1 and an eccentricity of 0.19 ± 0.09. The minimum mass of the companion is 2.8 ± 0.5 MJUP and the semi-major axis is 2.4 ± 0.5 au. We also report further observations of the metal-rich planet bearing star HD 160691. Our new solution confirms the previously reported planet and shows a trend indicating a second, longer-period companion. These discoveries add to the growing numbers of mildly eccentric, long-period extrasolar planets around metal-rich Sun-like stars. |
Keywords | stars: individual: HD 196050, stars: individual: HD 160691, stars: individual: HD 216437, planetary systems |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2002 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Liverpool John Moores University, United Kingdom |
Carnegie Institution of Washington, United States | |
University of California, United States | |
Anglo-Australian Observatory, Australia | |
Rutherford Appleton Laboratory, United Kingdom | |
University of Southern Queensland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q7039/extra-solar-planets-around-hd-196050-hd-216437-and-hd-160691
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