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A Be-type star with a black-hole companion

Author

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  • J. Casares

    (Instituto de Astrofísica de Canarias, E-38205 La Laguna, Santa Cruz de Tenerife, Spain
    Universidad de La Laguna, E-38206 La Laguna, Santa Cruz de Tenerife, Spain)

  • I. Negueruela

    (Ingeniería de Sistemas y Teoría de la Señal, Universidad de Alicante, Apartado 99, E-03080 Alicante, Spain)

  • M. Ribó

    (Departament d’Astronomia i Meteorologia, Institut de Ciències del Cosmos, Universitat de Barcelona, IEEC-UB, Martí i Franquès 1, E-08028 Barcelona, Spain)

  • I. Ribas

    (Institut de Ciències de l’Espai—(IEEC-CSIC), Campus UAB, Facultat de Ciències, Torre C5 - parell - 2a planta, E-08193 Bellaterra, Spain)

  • J. M. Paredes

    (Departament d’Astronomia i Meteorologia, Institut de Ciències del Cosmos, Universitat de Barcelona, IEEC-UB, Martí i Franquès 1, E-08028 Barcelona, Spain)

  • A. Herrero

    (Instituto de Astrofísica de Canarias, E-38205 La Laguna, Santa Cruz de Tenerife, Spain
    Universidad de La Laguna, E-38206 La Laguna, Santa Cruz de Tenerife, Spain)

  • S. Simón-Díaz

    (Instituto de Astrofísica de Canarias, E-38205 La Laguna, Santa Cruz de Tenerife, Spain
    Universidad de La Laguna, E-38206 La Laguna, Santa Cruz de Tenerife, Spain)

Abstract

A black hole with mass 3.8 to 6.9 times that of the Sun is found to be orbiting the nearby Be-type star MWC 656; the black hole is encircled by an accretion disk and X-ray quiescent, implying that Be binaries with black-hole companions are difficult to detect in conventional X-ray surveys.

Suggested Citation

  • J. Casares & I. Negueruela & M. Ribó & I. Ribas & J. M. Paredes & A. Herrero & S. Simón-Díaz, 2014. "A Be-type star with a black-hole companion," Nature, Nature, vol. 505(7483), pages 378-381, January.
    • Handle: RePEc:nat:nature:v:505:y:2014:i:7483:d:10.1038_nature12916
    DOI: 10.1038/nature12916
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