Cool Jupiters greatly outnumber their toasty siblings: occurrence rates from the Anglo-Australian Planet Search
Article
Article Title | Cool Jupiters greatly outnumber their toasty siblings: occurrence rates from the Anglo-Australian Planet Search |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Wittenmyer, Robert A. (Author), Wang, Songhu (Author), Horner, Jonathan (Author), Butler, R. P. (Author), Tinney, C. G. (Author), Carter, B. D. (Author), Wright, D. J. (Author), Jones, H. R. A. (Author), Bailey, J. (Author), O'Toole, S. J. (Author) and Johns, Daniel (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 492 (1), pp. 377-383 |
Number of Pages | 7 |
Year | 2020 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stz3436 |
Web Address (URL) | https://academic.oup.com/mnras/article/492/1/377/5670627 |
Abstract | Our understanding of planetary systems different to our own has grown dramatically in the past 30 yr. However, our efforts to ascertain the degree to which the Solar system is abnormal or unique have been hindered by the observational biases inherent to the methods that have yielded the greatest exoplanet hauls. On the basis of such surveys, one might consider our planetary system highly unusual - but the reality is that we are only now beginning to uncover the true picture. In this work, we use the full 18-yr archive of data from the Anglo-Australian Planet Search to examine the abundance of 'cool Jupiters' - analogues to the Solar system's giant planets, Jupiter and Saturn. We find that such planets are intrinsically far more common through the cosmos than their siblings, the hot Jupiters.We find that the occurrence rate of such 'cool Jupiters' is 6.73+2.09-1.13 per cent, almost an order of magnitude higher than the occurrence of hot Jupiters (at 0.84+0.70-0.20 per cent). We also find that the occurrence rate of giant planets is essentially constant beyond orbital distances of ~1 au. Our results reinforce the importance of legacy radial velocity surveys for the understanding of the Solar system's place in the cosmos. |
Keywords | techniques: radial velocities; planets and satellites: detection; planets and satellites: gaseous planets; Astrophysics - Earth and; Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
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 ©: 2020 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Centre for Astrophysics |
Yale University, United States | |
Carnegie Institution of Washington, United States | |
University of New South Wales | |
University of Hertfordshire, United Kingdom | |
Macquarie University | |
Kutztown University, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5x10/cool-jupiters-greatly-outnumber-their-toasty-siblings-occurrence-rates-from-the-anglo-australian-planet-search
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