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A Jovian analogue orbiting a white dwarf star
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Blackman, J. W., Beaulieu, J. P., Bennett, D. P., Danielski, C., Alard, C., Cole, A. A., Vandorou, A., Ranc, C., Terry, S. K., Bhattacharyay, A., Bond, I., Bachelet, E., Veras, Dimitri, Koshimoto, N., Batista, V. and Marquette, J. B. (2021) A Jovian analogue orbiting a white dwarf star. Nature, 598 (7880). pp. 272-275. doi:10.1038/s41586-021-03869-6 ISSN 0028-0836.
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Official URL: https://doi.org/10.1038/s41586-021-03869-6
Abstract
Studies have shown that the remnants of destroyed planets and debris-disk planetesimals can survive the volatile evolution of their host stars into white dwarfs , but few intact planetary bodies around white dwarfs have been detected . Simulations predict that planets in Jupiter-like orbits around stars of ≲8 M (solar mass) avoid being destroyed by the strong tidal forces of their stellar host, but as yet, there has been no observational confirmation of such a survivor. Here we report the non-detection of a main-sequence lens star in the microlensing event MOA-2010-BLG-477Lb using near-infrared observations from the Keck Observatory. We determine that this system contains a 0.53 ± 0.11 M white-dwarf host orbited by a 1.4 ± 0.3 Jupiter-mass planet with a separation on the plane of the sky of 2.8 ± 0.5 astronomical units, which implies a semi-major axis larger than this. This system is evidence that planets around white dwarfs can survive the giant and asymptotic giant phases of their host's evolution, and supports the prediction that more than half of white dwarfs have Jovian planetary companions . Located at approximately 2.0 kiloparsecs towards the centre of our Galaxy, it is likely to represent an analogue to the end stages of the Sun and Jupiter in our own Solar System. [Abstract copyright: © 2021. The Author(s), under exclusive licence to Springer Nature Limited.]
Item Type: | Journal Article | |||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QB Astronomy | |||||||||||||||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||
SWORD Depositor: | Library Publications Router | |||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Outer planets, White dwarf stars | |||||||||||||||||||||||||||||||||
Journal or Publication Title: | Nature | |||||||||||||||||||||||||||||||||
Publisher: | Nature Publishing | |||||||||||||||||||||||||||||||||
ISSN: | 0028-0836 | |||||||||||||||||||||||||||||||||
Official Date: | 14 October 2021 | |||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 598 | |||||||||||||||||||||||||||||||||
Number: | 7880 | |||||||||||||||||||||||||||||||||
Page Range: | pp. 272-275 | |||||||||||||||||||||||||||||||||
DOI: | 10.1038/s41586-021-03869-6 | |||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 19 November 2021 | |||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 13 April 2022 | |||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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