WD 1856 b: a close giant planet around a white dwarf that could have survived a common envelope phase

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dc.contributor.authorLagos, F.
dc.contributor.authorSchreiber, M. R.
dc.contributor.authorZorotovic, M.
dc.contributor.authorGansicke, B. T.
dc.contributor.authorRonco, M. P.
dc.contributor.authorHamers, Adrian S.
dc.date.accessioned2022-11-30T02:46:28Z
dc.date.available2022-11-30T02:46:28Z
dc.date.issued2021
dc.description.abstractThe discovery of a giant planet candidate orbiting the white dwarf WD 1856+534 with an orbital period of 1.4 d poses the questions of how the planet reached its current position. We here reconstruct the evolutionary history of the system assuming common envelope evolution as the main mechanism that brought the planet to its current position. We find that common envelope evolution can explain the present configuration if it was initiated when the host star was on the asymptotic giant branch, the separation of the planet at the onset of mass transfer was in the range 1.69–2.35 au, and if in addition to the orbital energy of the surviving planet either recombination energy stored in the envelope or another source of additional energy contributed to expelling the envelope. We also discuss the evolution of the planet prior to and following common envelope evolution. Finally, we find that if the system formed through common envelope evolution, its total age is in agreement with its membership to the Galactic thin disc. We therefore conclude that common envelope evolution is at least as likely as alternative formation scenarios previously suggested such as planet–planet scattering or Kozai–Lidov oscillations.en_ES
dc.facultadFacultad de Cienciasen_ES
dc.file.nameLagos_Wd2021.pdf
dc.identifier.doihttps://doi.org/10.1093/mnras/staa3703
dc.identifier.urihttp://repositoriobibliotecas.uv.cl/handle/uvscl/7383
dc.languageen
dc.publisherRoyal Astronomical Society
dc.rights© 2020 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjectPLANET–STAR INTERACTIONSen_ES
dc.subjectBINARIES: CLOSEen_ES
dc.subjectWHITE DWARFSen_ES
dc.titleWD 1856 b: a close giant planet around a white dwarf that could have survived a common envelope phase
dc.typeArticulo
uv.departamentoInstituto de Fisica y Astronomia
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