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Grandes cambios en la atmósfera de Plutón como lo revelan las recientes ocultaciones estelares
B Sicardy1, T Widemann, E Lellouch
1Observatoire de Paris, LESIA, 92195 Meudon, France. bruno.sicardy@obspm.fr
Nature
|July 11, 2003
Resumen
Plutón es Plutón y Plutón es Plutón.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La astronomía es la astronomía.
- Ciencias de la atmósfera Ciencias atmosféricas.
Sus antecedentes:
- La tenue atmósfera de nitrógeno de Plutón ha sido mal entendida debido a las raras oportunidades de observación.
- Estudios anteriores se basaron en eventos de ocultación estelar en 1985 y 1988.
- Ninguna nave espacial ha visitado aún a Plutón para el análisis atmosférico in situ.
Objetivo del estudio:
- Para investigar los cambios en la presión atmosférica de Plutón desde 1988.
- Para analizar datos de recientes eventos de ocultación estelar que involucran a Plutón.
- Para explorar las posibles variaciones estacionales en la atmósfera de Plutón.
Principales métodos:
- Utilizando datos de eventos de ocultación estelar ocurridos en los 14 años posteriores a 1988.
- Analizando las huellas de la curva de luz de las estrellas que pasan detrás de Plutón.
- Comparar los nuevos datos de ocultación con las observaciones históricas.
Principales resultados:
- Se observó un aumento significativo en la presión atmosférica de Plutón.
- La presión atmosférica parece haberse duplicado en el período de 14 años.
- La evidencia sugiere un probable efecto estacional que influye en la densidad atmosférica.
Conclusiones:
- La atmósfera de Plutón ha sufrido cambios sustanciales en la presión durante un período relativamente corto.
- Los cambios observados indican procesos atmosféricos dinámicos, posiblemente estacionales.
- Otras observaciones son cruciales para comprender la evolución atmosférica de Plutón.
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