Other
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994icar..112..513t&link_type=abstract
Icarus (ISSN 0019-1035), vol. 112, no. 2, p. 513-527
Other
45
Astronomical Models, Ice, Nitrogen, Pluto (Planet), Temperature Profiles, Albedo, Bolometers, Light Scattering, Particle Size Distribution, Phase Transformations, Pressure Effects
Scientific paper
Previous work by K. A. Tryka et al. (1993) has shown that the profile of the 2.148-micron band of solid nitrogen can be used as a 'thermometer' and determined the tempertature of nitrogen ice on Triton to be 38+2-1 K. Here we reevaluate that data and refine the temperature value to 38 +/- 1 K. Applying the same technique to Pluto we determine that the temperature of the N2 ice on that body is 40 +/- 2 K. Using this result we have created a nonisothermal flux model of the Pluto-Charon system. The model treats Pluto as a body with symmetric N2 polar caps and an equatorial region devoid of N2. Comparison with the infrared and millimeter flux measurements shows that the published fluxes are consistent with models incorporating extensive N2 polar caps (down to +/- 15 deg ot +/- 20 deg latitude) and an equatorial region with a bolometric albedo less than or equal to 0.2.
Brown Robert Hanbury
Chruikshank Dale P.
de Bergh Catherine
Geballe Thomas Ronald
Owen Tobias C.
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