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Updated: Sep 15, 2025
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Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System
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Condensación sólida refractaria detectada en un disco protoplanetario incrustado
M K McClure1, Merel Van't Hoff2,3, Logan Francis4
1Leiden Observatory, Leiden University, Leiden, The Netherlands. mcclure@strw.leidenuniv.nl.
Nature
|July 16, 2025
Resumen
Los astrónomos detectaron los primeros momentos de formación de planetas alrededor de la protoestrella HOPS-315. Esta observación revela el gas caliente inicial y los sólidos necesarios para la construcción de nuevos sistemas planetarios, similares a nuestro propio Sistema Solar.
Área de la Ciencia:
- * Astronomía y astrofísica
- * Ciencias planetarias
- * Evolución del disco protoplanetario
Sus antecedentes:
- * Los planetas terrestres se forman a partir de sólidos interestelares y rocosos que se originan en un gas caliente y frío.
- * Los minerales iniciales de alta temperatura que se recondensan de este gas marcan el comienzo de la formación de planetas.
- El origen de este gas caliente y su papel en la formación de planetas en otros sistemas siguen siendo poco conocidos.
Objetivo del estudio:
- * Para detectar y caracterizar el
- t = 0 y
- momento de la formación del planeta.
- Investigar la composición y el origen de los bloques de construcción iniciales de un nuevo sistema planetario.
- * Para comparar los primeros procesos de formación del sistema solar con los observados en otros sistemas.
Principales métodos:
- * Observaciones de la joven protoestrella HOPS-315 utilizando el Telescopio Espacial James Webb (JWST) y el Atacama Large Millimeter Array (ALMA).
- * Análisis de datos de longitud de onda infrarroja y milimétrica para identificar las composiciones de gases y minerales.
- * Comparación de los datos de observación con los modelos de condensación y estructura de disco.
Principales resultados:
- * Detección de un depósito de gas caliente de monóxido de silicio (SiO) y minerales de silicato cristalino en el disco interno (dentro de 2,2 UA) de HOPS-315.
- * Identificación de estos materiales como los bloques de construcción iniciales para un nuevo sistema planetario.
- La evidencia sugiere que se están formando sólidos refractarios análogos a los de nuestro Sistema Solar.
Conclusiones:
- * El estudio proporciona la primera detección astronómica del momento 't=0' de la formación de planetas.
- * Los entornos del disco interno están formados por la sublimación de sólidos interestelares y la posterior recondensación de materiales refractarios.
- * Estos procesos ocurren en escalas de tiempo comparables a la condensación refractaria en nuestro Sistema Solar, ofreciendo información sobre la universalidad de la formación de planetas.
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