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¿Inducido la formación de estrellas masivas en la nebulosa Trifida?
Cernicharo1, Lefloch, Cox
1J. Cernicharo, Instituto de Estructura de la Materia, Dpto. Fisica Molecular, Consejo Superior de Investigaciones Cientificas, (CSIC), Serrano 123, 28006 Madrid, Spain. B. Lefloch, Instituto de Estructura de la Materia, Dpto. Fisica Molecu.
Science (New York, N.Y.)
|October 17, 1998
Resumen
Fuentes protoestelares masivas detectadas en la joven nebulosa Trifida sugieren la formación de estrellas inducida. Estas estrellas en etapa temprana, que van desde núcleos inactivos hasta aquellos con chorros, representan la nebulosa.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Formación Estelar Formación Estelar.
- Las nebulosas galácticas.
Sus antecedentes:
- La Nebulosa Trifida, una joven región galáctica HII, es un sitio activo de evolución estelar.
- Observaciones anteriores en el infrarrojo han insinuado la presencia de objetos protoestelares dentro de la nebulosa.
Objetivo del estudio:
- Para investigar la naturaleza y la etapa evolutiva de las fuentes protostellares dentro de la Nebulosa Trífida.
- Para explorar el potencial de la formación de estrellas inducida en este entorno dinámico.
Principales métodos:
- Utilizó datos del observatorio espacial infrarrojo para detectar y caracterizar fuentes protoestelares.
- Analizó la asociación de estas fuentes con las condensaciones de gas molecular.
- Examinó los estados evolutivos, incluida la eyección de masa y la actividad del chorro óptico.
Principales resultados:
- Identificó varias fuentes protoestelares masivas (17-60 masas solares) en varias etapas evolutivas.
- Encontró estas fuentes ubicadas en los bordes y dentro de la nebulosa, vinculadas al gas denso.
- Se observó un rango desde núcleos inactivos hasta fuentes que exhiben una violenta eyección de masa y chorros ópticos.
Conclusiones:
- Las fuentes protoestelares detectadas representan la generación más reciente de estrellas en la Nebulosa Trifida.
- La evidencia sugiere que estas estrellas se formaron a través de un proceso de formación de estrellas inducido dentro de la nebulosa.
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