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Published on: February 12, 2013
La luz hace eco de las antiguas supernovas en la Gran Nube de Magallanes.
Armin Rest1, Nicholas B Suntzeff, Knut Olsen
1Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, La Serena, Chile.
Nature
|December 24, 2005
Resumen
Los científicos han detectado ecos de luz de las supernovas históricas en la Gran Nube de Magallanes. Estos ecos ayudan a determinar la edad y el tipo de supernova, ofreciendo nuevos conocimientos sobre las explosiones cósmicas.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Las explosiones cósmicas son explosiones cósmicas.
- Restos de supernovas de las supernovas.
Sus antecedentes:
- Los ecos de luz de supernova, la luz dispersa de explosiones pasadas, pueden revelar la posición, la edad y el tipo de supernova.
- Si bien se conocen ecos extragalácticos, no se ha encontrado ninguno para las supernovas galácticas históricas.
- Las búsquedas de ecos de luz de supernova en la Vía Láctea no han tenido éxito.
Objetivo del estudio:
- Para buscar e identificar los ecos de luz de supernovas históricas dentro de la Gran Nube de Magallanes.
- Para determinar la edad y el tipo de estas supernovas históricas utilizando propiedades de eco.
Principales métodos:
- Observación de complejos débiles de brillo de superficie variable en la Gran Nube de Magallanes.
- Análisis de los movimientos propios aparentes de estos complejos.
- Utilizando datos de distancia y movimiento propio para estimar edades de eco.
Principales resultados:
- Descubrimiento de tres candidatos a eco de luz asociados con pequeños y probablemente jóvenes restos de supernovas.
- Se cree que estos restos son supernovas de tipo Ia.
- Edades estimadas de 610 y 410 años para dos de los ecos identificados.
Conclusiones:
- La detección de estos ecos de luz proporciona evidencia de supernovas históricas en la Gran Nube de Magallanes.
- Este método permite el estudio de las características de las supernovas mucho después del evento inicial.
- Abre nuevas vías para investigar la historia de las supernovas en nuestro vecindario galáctico.
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