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Peer-reviewedCC BY 4.0The Astrophysical Journal

Planetary Accretion Is Less Frequent in Wide Binaries: Evidence from Metal-enriched White Dwarfs in DESI DR1

  • Siyi 偲艺 Xu 许1
  • Laura. K. Rogers2
  • Joan Najita2
  • Boris T. Gänsicke3
  • Paula Izquierdo3
  • Sergey E. Koposov4,5
  • Christopher J. Manser6
  • Andrew Swan3
  • Sandford Nathan7
  • Wang Wenting8
  • J. Aguilar9
  • S. Ahlen10
24 more authors
  • C. Allende Prieto11,12
  • D. Bianchi13,14
  • D. Brooks15
  • T. Claybaugh9
  • A. de la Macorra16
  • J. E. Forero-Romero17
  • Satya Gontcho A. Gontcho18
  • G. Gutierrez19
  • R. Joyce2
  • M. Landriau9
  • L. Le Guillou20
  • A. Meisner2
  • R. Miquel21,22
  • W. J. Percival23,24
  • F. Prada25
  • I. Pérez-Ràfols26
  • G. Rossi27
  • E. Sanchez28
  • D. Schlegel9
  • J. Silber9
  • G. Tarlé29
  • B. A. Weaver2
  • R. Zhou9
  • The DESI collaboration
29 affiliations
  1. 1Gemini Observatory/NSF NOIRLab
  2. 2NSF NOIRLab
  3. 3University of Warwick
  4. 4University of Edinburgh
  5. 5University of Cambridge
  6. 6Imperial College London
  7. 7University of Toronto
  8. 8Shanghai Jiao Tong University
  9. 9Lawrence Berkeley National Laboratory
  10. 10Boston University
  11. 11Universidad de La Laguna (ULL)
  12. 12Instituto de Astrofísica de Canarias
  13. 13Università degli Studi di Milano
  14. 14INAF-Osservatorio Astronomico di Brera
  15. 15University College London
  16. 16Universidad Nacional Autónoma de México
  17. 17Universidad de los Andes
  18. 18University of Virginia
  19. 19Fermi National Accelerator Laboratory
  20. 20Sorbonne Université
  21. 21Institució Catalana de Recerca i Estudis Avançats
  22. 22Institut de Física d’Altes Energies (IFAE)
  23. 23University of Waterloo
  24. 24Perimeter Institute for Theoretical Physics
  25. 25Instituto de Astrofísica de Andalucía (CSIC)
  26. 26Universitat Politècnica de Catalunya
  27. 27Sejong University
  28. 28CIEMAT
  29. 29University of Michigan
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Abstract

Binary stars are common in the Galaxy, and understanding how stellar binarity influences the formation and evolution of planetary systems is an active area of research. In this study, we use metal-enriched white dwarfs in wide binaries as tracers of long-lived planetary systems. With Data Release 1 from the Dark Energy Spectroscopic Instrument (DESI), we find that the fraction of cool metal-enriched white dwarfs in wide binaries is 9.8% ± 2.1%, significantly lower (4.7 σ ) than the 20.5% ± 0.9% in a control sample of single systems. Furthermore, we identify a tentative dependence of metal enrichment on projected separation and white dwarf effective temperature, where enrichment fraction decreases at smaller separations and lower temperatures. These findings indicate that, compared to single stars, binary systems either start with smaller initial planetary reservoirs due to suppressed planetesimal formation or undergo more rapid depletion of planetary material during the initial part of the white dwarf stage.

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Cite

BibTeXRIS
BibTeX
@article{许2026planetary,
  title = {{Planetary Accretion Is Less Frequent in Wide Binaries: Evidence from Metal-enriched White Dwarfs in DESI DR1}},
  author = {Siyi 偲艺 Xu 许 and Laura. K. Rogers and Joan Najita and Boris T. Gänsicke and Paula Izquierdo and Sergey E. Koposov and Christopher J. Manser and Andrew Swan and Sandford Nathan and Wang Wenting and J. Aguilar and S. Ahlen and C. Allende Prieto and D. Bianchi and D. Brooks and T. Claybaugh and A. de la Macorra and J. E. Forero-Romero and Satya Gontcho A. Gontcho and G. Gutierrez and R. Joyce and M. Landriau and L. Le Guillou and A. Meisner and R. Miquel and W. J. Percival and F. Prada and I. Pérez-Ràfols and G. Rossi and E. Sanchez and D. Schlegel and J. Silber and G. Tarlé and B. A. Weaver and R. Zhou and The DESI collaboration},
  journal = {The Astrophysical Journal},
  year = {2026},
  month = oct,
  doi = {10.3847/1538-4357/aea994},
  url = {https://iopscience.iop.org/article/10.3847/1538-4357/aea994},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Planetary Accretion Is Less Frequent in Wide Binaries: Evidence from Metal-enriched White Dwarfs in DESI DR1
AU  - Siyi 偲艺 Xu 许
AU  - Laura. K. Rogers
AU  - Joan Najita
AU  - Boris T. Gänsicke
AU  - Paula Izquierdo
AU  - Sergey E. Koposov
AU  - Christopher J. Manser
AU  - Andrew Swan
AU  - Sandford Nathan
AU  - Wang Wenting
AU  - J. Aguilar
AU  - S. Ahlen
AU  - C. Allende Prieto
AU  - D. Bianchi
AU  - D. Brooks
AU  - T. Claybaugh
AU  - A. de la Macorra
AU  - J. E. Forero-Romero
AU  - Satya Gontcho A. Gontcho
AU  - G. Gutierrez
AU  - R. Joyce
AU  - M. Landriau
AU  - L. Le Guillou
AU  - A. Meisner
AU  - R. Miquel
AU  - W. J. Percival
AU  - F. Prada
AU  - I. Pérez-Ràfols
AU  - G. Rossi
AU  - E. Sanchez
AU  - D. Schlegel
AU  - J. Silber
AU  - G. Tarlé
AU  - B. A. Weaver
AU  - R. Zhou
AU  - The DESI collaboration
PY  - 2026
DA  - 2026/10/30
JO  - The Astrophysical Journal
DO  - 10.3847/1538-4357/aea994
UR  - https://iopscience.iop.org/article/10.3847/1538-4357/aea994
AB  - Binary stars are common in the Galaxy, and understanding how stellar binarity influences the formation and evolution of planetary systems is an active area of research. In this study, we use metal-enriched white dwarfs in wide binaries as tracers of long-lived planetary systems. With Data Release 1 from the Dark Energy Spectroscopic Instrument (DESI), we find that the fraction of cool metal-enriched white dwarfs in wide binaries is 9.8% ± 2.1%, significantly lower (4.7 σ ) than the 20.5% ± 0.9% in a control sample of single systems. Furthermore, we identify a tentative dependence of metal enrichment on projected separation and white dwarf effective temperature, where enrichment fraction decreases at smaller separations and lower temperatures. These findings indicate that, compared to single stars, binary systems either start with smaller initial planetary reservoirs due to suppressed planetesimal formation or undergo more rapid depletion of planetary material during the initial part of the white dwarf stage.
SN  - 1538-4357
SN  - 0004-637X
ER  -