Occultation evidence for an atmosphere on Pluto

Details Occultation evidence for an atmosphere on Pluto Occultation evidence for an atmosphere on Pluto

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.336..452h&link_type=abstract

Nature (ISSN 0028-0836), vol. 336, Dec. 1, 1988, p. 452-454. Research supported by NASA.

Computer Science

47

Atmospheric Models, Pluto Atmosphere, Stellar Occultation, Atmospheric Pressure, Atmospheric Temperature, Methane, Planetary Surfaces

Scientific paper

Observations from different sources of Pluto occulting a 12th-magnitude star indicate an extended atmosphere around the planet. Here, data obtained from the 1 m telescope at the University of Tasmania, Hobart are interpreted in terms of a theory for occultation by an atmosphere whose thickness is comparable to the planetary radius. The data can be satisfactorily fitted with a methane atmosphere at plausible pressures and temperatures. The surface pressures inferred from this single chord are uncertain by an order of magnitude, but are consistent with spectroscopic constraints.

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