A Jovian analogue orbiting a white dwarf star

Autor: Ian A. Bond, Sean K. Terry, Dimitri Veras, C. Danielski, J. B. Marquette, J.-P. Beaulieu, Naoki Koshimoto, Etienne Bachelet, V. Batista, J. W. Blackman, D. P. Bennett, Aikaterini Vandorou, C. Alard, Andrew A. Cole, Clément Ranc, Aparna Bhattacharya
Přispěvatelé: National Aeronautics and Space Administration (US), European Commission, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), NASA Goddard Space Flight Center (GSFC), Université Paris-Saclay, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Nature
Nature, Nature Publishing Group, 2021, 598 (7880), pp.272-275. ⟨10.1038/s41586-021-03869-6⟩
Nature, 2021, 598 (7880), pp.272-275. ⟨10.1038/s41586-021-03869-6⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
ISSN: 0028-0836
1476-4679
1476-4687
DOI: 10.1038/s41586-021-03869-6⟩
Popis: Studies1,2 have shown that the remnants of destroyed planets and debris-disk planetesimals can survive the volatile evolution of their host stars into white dwarfs3,4, but few intact planetary bodies around white dwarfs have been detected5–8. Simulations predict9–11 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-477Lb12 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 companions13. 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. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
Data presented in this work were obtained at the W. M. Keck Observatory from telescope time allocated to the National Aeronautics and Space Administration through the agency’s scientific partnership with the California Institute of Technology and the University of California. This work was supported by the University of Tasmania through the UTAS Foundation, ARC grant DP200101909, and the endowed Warren Chair in Astronomy. We acknowledge the support of ANR COLD WORLDS (ANR-18-CE31-0002) at the Institut d’Astrophysique de Paris and the Laboratoire d’Astrophysique de Bordeaux. D.P.B., A.B., N.K., C.R. and S.K.T. were supported by NASA through grant NASA-80NSSC18K0274 and by NASA award no. 80GSFC17M0002. E.B. acknowledges support from NASA grant 80NSSC19K0291. Work by N.K. is supported by JSPS KAKENHI grant no. JP18J00897. C.D. acknowledges financial support from the State Agency for Research of the Spanish MCIU through the ‘Center of Excellence Severo Ochoa’ award to the Instituto de Astrofísica de Andalucía (SEV-2017-0709), and the Group project ref. PID2019-110689RB-I00/AEI/10.13039/501100011033. D.V. gratefully acknowledges the support of the STFC via an Ernest Rutherford Fellowship (grant ST/P003850/1).
Databáze: OpenAIRE
Externí odkaz: