Volume 505, Number 2, October II 2009
|Page(s)||743 - 753|
|Section||Stellar structure and evolution|
|Published online||03 August 2009|
On the presence and absence of disks around O-type stars
Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland, UK e-mail: email@example.com
2 The School of Physics and Astronomy, EC Stoner Building, The University of Leeds, Leeds LS2 9JT, UK
3 Chester F. Carlson Center for Imaging Science, Rochester Institute of Technology, 54 Lomb Memorial Drive, Rochester, NY 14623, USA
4 School of Physics, University of Exeter, Exeter EX4 4QL, UK
5 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Accepted: 24 July 2009
As the favoured progenitors of long-duration gamma-ray bursts, massive stars may represent our best signposts of individual objects in the early Universe, but special conditions seem required to make these bursters. These are thought to originate from the progenitor's rapid rotation and associated asymmetry.
Key words: stars: chemically peculiar / polarization / stars: winds, outflows / supergiants / stars: formation / circumstellar matter
© ESO, 2009
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