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La supresión de la formación estelar en las galaxias de tipo temprano por la retroalimentación de los agujeros negros
Kevin Schawinski1, Sadegh Khochfar, Sugata Kaviraj
1Department of Physics, University of Oxford, Oxford OX1 3RH, UK.
Nature
|August 25, 2006
Resumen
Los agujeros negros supermasivos regulan la evolución de las galaxias expulsando gas, suprimiendo la formación de estrellas en galaxias masivas. Este mecanismo de retroalimentación es fundamental para comprender la historia de la formación de estrellas en las galaxias.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Evolución de la galaxia Evolución de la galaxia.
- Física del agujero negro Física del agujero negro
Sus antecedentes:
- Los agujeros negros supermasivos residen en los centros galácticos e influyen en las galaxias anfitrionas a través de la retroalimentación.
- Existen relaciones observadas entre las propiedades de los agujeros negros y las características de la galaxia anfitriona.
Objetivo del estudio:
- Para investigar el papel de la retroalimentación de los agujeros negros supermasivos en las galaxias masivas de tipo temprano.
- Para derivar una relación empírica para la masa crítica del agujero negro que influye en la formación de estrellas.
Principales métodos:
- Observaciones de alta resolución de emisiones ultravioletas de galaxias masivas de tipo temprano.
- Análisis de la masa del agujero negro y la dispersión de velocidad de la galaxia anfitriona.
Principales resultados:
- Se derivó una relación empírica para una masa crítica de agujero negro.
- Las salidas de los agujeros negros por encima de esta masa crítica suprimen la formación de estrellas al calentar y expulsar gas frío.
Conclusiones:
- Los agujeros negros supermasivos, a pesar de su pequeña masa, tienen un impacto crítico en la historia de la formación de estrellas en las galaxias.
- La retroalimentación del agujero negro es un mecanismo clave que regula la formación de estrellas en galaxias masivas.
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