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Upper Limits on Gaseous CO at Pluto and Triton from High-Resolution Near-IR Spectroscopy

By Leslie A. Young, Jason C. Cook and Roger V. Yelle

Abstract

a3-#upper limit to the CO mole fraction of 6%. For Pluto, this limit to the gaseous mole fraction argues against intimate mixtures (e.g., "salt-and-pepper" mixtures, as opposed to solid solutions) of surface CO and N 2 frost. c # 2001 Academic Press Key Words: Pluto, atmosphere; Triton, atmosphere; carbon monoxide. 1. INTRODUCTION The mole fractions of CO in the atmospheres of Pluto and Triton touch on three important and long-standing issues. The 1 Visiting Astronomer at the Infrared Telescope Facility, which is operated by the University of Hawaii under contract to the National Aeronautics and Space Administration. first is the issue of surface--atmosphere interaction. While CO is expected to be present in the atmospheres of both bodies, because it is seen on their surfaces, the atmospheric mole fractions depend on how the atmosphere interacts with the surface. The three models for the beha

Topics: Key Words, Pluto, atmosphere, Triton, atmosphere, carbon monoxide
Year: 2001
DOI identifier: 10.1006/icar.2001.6662
OAI identifier: oai:CiteSeerX.psu:10.1.1.23.4346
Provided by: CiteSeerX
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