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A resolved outflow of matter from a brown dwarf

Author

Listed:
  • Emma T. Whelan

    (Dublin Institute for Advanced Studies)

  • Thomas P. Ray

    (Dublin Institute for Advanced Studies)

  • Francesca Bacciotti

    (Osservatorio Astrofisico di Arcetri, INAF)

  • Antonella Natta

    (Osservatorio Astrofisico di Arcetri, INAF)

  • Leonardo Testi

    (Osservatorio Astrofisico di Arcetri, INAF)

  • Sofia Randich

    (Osservatorio Astrofisico di Arcetri, INAF)

Abstract

Brown dwarfs: star quality Brown dwarfs are intermediate in mass between normal stars and planets. Their mass is so low (less than 70 Jupiter masses) that a brown dwarf's core is too cool to ignite hydrogen, hence they are sometimes called ‘failed stars’. The birth of a normal star is accompanied by both accretion and expulsion of matter. There is growing evidence for small accretion disks around brown dwarfs, so the question arises: do brown dwarfs have outflows too? Whelan et al. show that they do, and that their outflows are miniature versions of those produced by T Tauri stars (precursors to stars like the Sun). This suggests that the outflow phenomenon is universal: it accompanies not only the formation of stars and brown dwarfs but perhaps even planets.

Suggested Citation

  • Emma T. Whelan & Thomas P. Ray & Francesca Bacciotti & Antonella Natta & Leonardo Testi & Sofia Randich, 2005. "A resolved outflow of matter from a brown dwarf," Nature, Nature, vol. 435(7042), pages 652-654, June.
    • Handle: RePEc:nat:nature:v:435:y:2005:i:7042:d:10.1038_nature03598
    DOI: 10.1038/nature03598
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