LIMITS ON QUAOAR'S ATMOSPHERE

@article{Fraser2013LIMITSOQ,
  title={LIMITS ON QUAOAR'S ATMOSPHERE},
  author={W. Fraser and C. Trujillo and A. Stephens and G. Gimeno and M. Brown and S. Gwyn and J. Kavelaars},
  journal={The Astrophysical Journal},
  year={2013},
  volume={774}
}
Here we present high cadence photometry taken by the Acquisition Camera on Gemini South, of a close passage by the ~540 km radius Kuiper belt object, (50000) Quaoar, of a r' = 20.2 background star. Observations before and after the event show that the apparent impact parameter of the event was 0."019 ± 0."004, corresponding to a close approach of 580 ± 120 km to the center of Quaoar. No signatures of occultation by either Quaoar's limb or its potential atmosphere are detectable in the relative… Expand
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