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Infall of gas as the formation mechanism of stars up to 20 times more massive than the Sun

Author

Listed:
  • Maria T. Beltrán

    (Universitat de Barcelona)

  • Riccardo Cesaroni

    (Osservatorio Astrofisico di Arcetri)

  • Claudio Codella

    (Istituto di Radioastronomia, INAF, Sezione di Firenze)

  • Leonardo Testi

    (Osservatorio Astrofisico di Arcetri)

  • Ray S. Furuya

    (Subaru Telescope, National Astronomical Observatory of Japan)

  • Luca Olmi

    (Istituto di Radioastronomia, INAF, Sezione di Firenze)

Abstract

Stars in the making High-mass or OB-type stars can dominate the appearance and evolution of galaxies and certainly synthesize heavy elements and influence the interstellar medium via energetic winds and supernovae. But current models of star formation cannot explain their existence. Low-mass stars grow initially by accreting gas from the surrounding material. But for a star 10 times more massive than the Sun, the powerful stellar radiation is expected to inhibit accretion and limit the growth of its mass. The observation of an ammonia line towards a high-mass star forming region now provides support for the theory that high-mass stars form via nonspherical accretion: gas appears to be falling inwards towards a very young star of about 20 times the mass of the Sun.

Suggested Citation

  • Maria T. Beltrán & Riccardo Cesaroni & Claudio Codella & Leonardo Testi & Ray S. Furuya & Luca Olmi, 2006. "Infall of gas as the formation mechanism of stars up to 20 times more massive than the Sun," Nature, Nature, vol. 443(7110), pages 427-429, September.
  • Handle: RePEc:nat:nature:v:443:y:2006:i:7110:d:10.1038_nature05074
    DOI: 10.1038/nature05074
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