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La historia de las galaxias
M Fukugita1, C J Hogan, P J Peebles
1Institute for Advanced Study, Princeton, New Jersey 08540, USA.
Nature
|June 6, 1996
Resumen
Las observaciones astronómicas revelan la evolución de las galaxias desde el Universo primitivo. El gas intergaláctico se ha limpiado, lo que ralentiza la formación de estrellas a medida que las galaxias consumen su combustible.
Área de la Ciencia:
- Evolución cósmica y formación de galaxias.
- Astrofísica y cosmología observacional.
Sus antecedentes:
- El Universo primitivo era rico en gas intergaláctico, alimentando la rápida formación de estrellas en las galaxias jóvenes.
- La evolución galáctica implica el consumo de gas y los cambios en las tasas de formación estelar a lo largo del tiempo cósmico.
Objetivo del estudio:
- Para reconstruir la historia de las galaxias utilizando observaciones astronómicas profundas y detalladas.
- Comprender el papel del gas intergaláctico en la evolución de las galaxias.
Principales métodos:
- Utilizando observaciones astronómicas a largo plazo para investigar la historia cósmica.
- Analizar la profundidad y el detalle de los datos de observación para rastrear la formación de galaxias y el contenido de gas.
Principales resultados:
- El espacio intergaláctico se ha vuelto significativamente más limpio en el tiempo cósmico.
- Las galaxias han consumido progresivamente su suministro de gas, lo que lleva a una disminución en las tasas de formación estelar.
Conclusiones:
- La evolución de las galaxias está intrínsecamente ligada a la disponibilidad y distribución del gas intergaláctico.
- La limpieza observada del espacio intergaláctico marca una fase significativa en la historia cósmica, que influye en el crecimiento de las galaxias y la formación de estrellas.
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