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Two chemically similar stellar overdensities on opposite sides of the plane of the Galactic disk

Author

Listed:
  • Maria Bergemann

    (Max Planck Institute for Astronomy)

  • Branimir Sesar

    (Deutsche Börse AG)

  • Judith G. Cohen

    (Mathematics, and Astronomy, California Institute of Technology)

  • Aldo M. Serenelli

    (Institute of Space Sciences (ICE, CSIC), Carrer de Can Magrans
    Institut d’Estudis Espacials de Catalunya (IEEC))

  • Allyson Sheffield

    (LaGuardia Community College, City University of New York)

  • Ting S. Li

    (Fermi National Accelerator Laboratory)

  • Luca Casagrande

    (Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, The Australian National University
    ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia)

  • Kathryn V. Johnston

    (Columbia University)

  • Chervin F. P. Laporte

    (Columbia University)

  • Adrian M. Price-Whelan

    (Princeton University)

  • Ralph Schönrich

    (Rudolf-Peierls Centre for Theoretical Physics, University of Oxford)

  • Andrew Gould

    (Max Planck Institute for Astronomy
    Korea Astronomy and Space Science Institute
    Ohio State University)

Abstract

Fourteen stars from stellar overdensities above and below the Galactic disk have the same elemental abundances as disk stars, suggesting that these stars originated in the disk, perhaps being removed during interaction with passing dwarf galaxies.

Suggested Citation

  • Maria Bergemann & Branimir Sesar & Judith G. Cohen & Aldo M. Serenelli & Allyson Sheffield & Ting S. Li & Luca Casagrande & Kathryn V. Johnston & Chervin F. P. Laporte & Adrian M. Price-Whelan & Ralph, 2018. "Two chemically similar stellar overdensities on opposite sides of the plane of the Galactic disk," Nature, Nature, vol. 555(7696), pages 334-337, March.
    • Handle: RePEc:nat:nature:v:555:y:2018:i:7696:d:10.1038_nature25490
    DOI: 10.1038/nature25490
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