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Una salida resuelta de materia de una enana marrón
Emma T Whelan1, Thomas P Ray, Francesca Bacciotti
1Dublin Institute for Advanced Studies, 5 Merrion Square, Dublin 2, Ireland. ewhelan@cp.dias.ie
Nature
|June 3, 2005
Resumen
Las enanas marrones recién nacidas, o "estrellas fallidas", exhiben salidas supersónicas, similares a las estrellas jóvenes pero a una escala más pequeña. Este descubrimiento sugiere que la expulsión de materia es un mecanismo universal en la formación de estrellas y planetas.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Formación estelar y evolución de las estrellas.
Sus antecedentes:
- El nacimiento de las estrellas implica tanto la acreción como la expulsión de materia a través de salidas supersónicas.
- Este fenómeno de salida está bien documentado en estrellas jóvenes.
- Sigue siendo incierto si flujos similares ocurren en enanas marrones, las "estrellas fallidas" entre estrellas y planetas.
Objetivo del estudio:
- Para investigar si las enanas marrones recién nacidas exhiben flujos de salida supersónicos.
- Para resolver espacialmente y caracterizar las salidas de una enana marrón.
Principales métodos:
- Utilizó datos espectro-astrométricos para resolver espacialmente la materia que fluye hacia afuera.
- Analizó las características de la salida de la enana marrón observada.
Principales resultados:
- Se resolvió y confirmó con éxito una salida supersónica de una enana marrón.
- Las características del flujo de salida son comparables a las de las estrellas jóvenes, pero a menor escala.
Conclusiones:
- El mecanismo que impulsa los flujos de salida parece ser universal en todas las estrellas y enanas marrones.
- Este mecanismo de salida universal puede desempeñar un papel en la formación de planetas.
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