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Composiciones de la superficie a través de Plutón y Caronte

W M Grundy1, R P Binzel2, B J Buratti3

  • 1Lowell Observatory, Flagstaff, AZ 86001, USA. w.grundy@lowell.edu.

Science (New York, N.Y.)
|March 19, 2016
PubMed
Resumen
Este resumen es generado por máquina.

New Horizons trazó un mapa de Plutón y Caronte, revelando distribuciones complejas de hielo y diversos colores de la superficie de Plutón. Caronte muestra patrones de color más simples con firmas únicas de amoníaco cerca de cráteres de impacto.

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Área de la Ciencia:

  • Ciencias planetarias
  • Astrogeología
  • Análisis de la composición de la superficie

Sus antecedentes:

  • La misión New Horizons proporcionó datos sin precedentes de cerca de Plutón y Caronte.
  • Comprender la composición de la superficie y la geología de estos objetos del Cinturón de Kuiper es crucial para la ciencia planetaria.

Objetivo del estudio:

  • Para mapear y analizar los colores y espectros infrarrojos de Plutón y Caronte.
  • Comprender la distribución y los procesos que afectan la superficie y las características geológicas de ambos cuerpos celestes.

Principales métodos:

  • Utilizó las capacidades de imágenes y mapeo espectral de la nave espacial New Horizons.
  • Analizaron datos de color visible y espectros del infrarrojo cercano a través de los hemisferios de encuentro de Plutón y Caronte.

Principales resultados:

  • La superficie de Plutón muestra distribuciones complejas de metano, monóxido de carbono y hielos de nitrógeno, influenciados por la sublimación, la condensación y el flujo glacial.
  • Se observaron distintas variaciones regionales de color en Plutón, junto con el lecho rocoso de hielo de agua mapeado.
  • Caronte exhibe un patrón de color más simple, con latitudes bajas neutrales y una región polar norteña rojiza, y absorción de amoníaco localizada cerca de cráteres de impacto.

Conclusiones:

  • Las diversas características de la superficie y las distribuciones de hielo en Plutón están moldeadas por procesos estacionales y geológicos.
  • La composición de la superficie de Caronte, particularmente la presencia de amoníaco, ofrece información sobre su actividad geológica y su historia.