The Pan-Pacific planet search. III. Five companions orbiting giant stars
Article
Article Title | The Pan-Pacific planet search. III. Five companions orbiting giant stars |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Wittenmyer, R. A. (Author), Butler, R. P. (Author), Wang, L. (Author), Bergmann, C. (Author), Salter, G. S. (Author), Tinney, C. G. (Author) and Johnson, J. A. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 455 (2), pp. 1398-1405 |
Number of Pages | 8 |
Year | 2016 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stv2396 |
Web Address (URL) | https://academic.oup.com/mnras/article/455/2/1398/1114082 |
Abstract | We report a new giant planet orbiting the K giant HD 155233, as well as four stellar-mass companions from the Pan-Pacific Planet Search, a Southern hemisphere radial velocity survey for planets orbiting nearby giants and sub-giants. We also present updated velocities and a refined orbit for HD 47205b (7 CMa b), the first planet discovered by this survey. HD 155233b has a period of 885 ± 63 d, eccentricity e = 0.03 ± 0.20, and m sin i = 2.0 ± 0.5 MJup. The stellar-mass companions range in m sin i from 0.066 to 0.33 M. Whilst HD 104358B falls slightly below the traditional 0.08 M hydrogen-burning mass limit, and is hence a brown-dwarf candidate, we estimate only a 50 per cent a priori probability of a truly sub-stellar mass. |
Keywords | radial velocities; planetary systems; planets and satellites;detection. |
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 ©: 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of New South Wales |
Carnegie Institution of Washington, United States | |
Key Laboratory of Optical Astronomy, China | |
University of Canterbury, New Zealand | |
Aix-Marseille University, France | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3x3z/the-pan-pacific-planet-search-iii-five-companions-orbiting-giant-stars
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