A Debris Disk around the Central Star of the Helix Nebula?

  title={A Debris Disk around the Central Star of the Helix Nebula?},
  author={K. Y. L. Su and You-Hua Chu and George H. Rieke and Patrick J. Huggins and Robert A. Gruendl and Ralf Napiwotzki and Thomas Rauch and William B. Latter and Kevin Volk},
  journal={The Astrophysical Journal Letters},
  pages={L41 - L45}
  • K. Su, Y. Chu, K. Volk
  • Published 11 February 2007
  • Physics, Geology
  • The Astrophysical Journal Letters
Excess emission from a pointlike source coincident with the central star of the Helix Nebula is detected with Spitzer at 8, 24, and 70 μm. At 24 μm, the central source is superposed on an extended diffuse emission region. While the [O IV] 25.89 μm line contributes to the diffuse emission, a 10-35 μm spectrum of the central source shows a strong thermal continuum. The excess emission from the star most likely originates from a dust disk with blackbody temperatures of 90-130 K. Assuming a simple… 

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