| Автор | Thompson, W. Reid |
| Дата выпуска | 1989 |
| dc.description | Modeling of Triton's spectrum indicates a bright scattering layer of optical depth τ ≃ 3 overlying an optically deep layer of CH<sub>4</sub> with high absorption and little scattering. UV absorption in the spectrum indicates τ ≃ 0.3 of red‐yellow haze, although some color may also arise from complex organics partially visible on the surface. An analysis of this and other (spectro) photometric evidence indicates that Triton most likely has a bright surface, which was partially visible in 1977–1980. Geometric albedo p = 0.62<sub>−0.12</sub><sup>+0.18</sup>, radius r = 1480 ± 180km, and temperature T = 48 ± 6 K. With scattering optical depths of 0.3–3 and ∼ 1–10mb of N<sub>2</sub>, a Mars‐like atmospheric density and surface visibility pertain. Imaging with the 0.62 µm CH<sub>4</sub> filter of the Voyager 2 wide angle camera could show ∼20% contrast between the average surface and clean exposures of CH<sub>4</sub> ice (which is not limited to the polar caps). Low far‐infrared atmospheric opacity will in principle allow the detection of thermal gradients in the surface caused by optically transmitting but infrared opaque CH<sub>4</sub> and N<sub>2</sub> ice. |
| Формат | application.pdf |
| Копирайт | Copyright 1989 by the American Geophysical Union. |
| Тема | Neptune Predictions |
| Тема | Planetary Sciences: Solid Surface Planets |
| Тема | Planetology: Solid Surface Planets and Satellites: Atmospheric composition and chemistry |
| Тема | Planetology: Solid Surface Planets and Satellites: Composition |
| Тема | Planetology: Solid Surface Planets and Satellites: Surfaces |
| Тема | Planetary Sciences: Fluid Planets |
| Тема | Planetology: Fluid Planets: Surfaces |
| Название | Triton: Scattering models and surface/atmosphere constraints |
| Тип | article |
| DOI | 10.1029/GL016i008p00969 |
| Electronic ISSN | 1944-8007 |
| Print ISSN | 0094-8276 |
| Журнал | Geophysical Research Letters |
| Том | 16 |
| Первая страница | 969 |
| Последняя страница | 972 |
| Аффилиация | Thompson, W. Reid; Center for Radiophysics and Space Research, Cornell University |
| Выпуск | 8 |
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