Discovery of carbon monoxide in the upper atmosphere of Pluto

@article{Greaves2011DiscoveryOC,
  title={Discovery of carbon monoxide in the upper atmosphere of Pluto},
  author={Jane Greaves and Ch. Helling and Per Friberg},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  year={2011},
  volume={414}
}
Pluto’s icy surface has changed colour and its atmosphere has swelled since its last closest approach to the Sun in 1989. The thin atmosphere is produced by evaporating ices, and so can also change rapidly, and in particular carbon monoxide should be present as an active thermostat. Here we report the discovery of gaseous CO via the 1.3-mm wavelength J=2–1 rotational transition, and find that the line-centre signal is more than twice as bright as a tentative result obtained in 2000 by Bock… Expand

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