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Una chimenea galáctica en el brazo de Perseo de la Vía Láctea
M Normandeau1, A R Taylor, P E Dewdney
1Department of Physics and Astronomy, University of Calgary, Alberta, Canada.
Nature
|April 25, 1996
Resumen
Las chimeneas galácticas, conductos para el transporte de gas caliente, son evidenciadas por nuevos mapas de hidrógeno atómico en el brazo de Perseo. Estas estructuras, probablemente formadas por vientos estelares masivos, conectan los discos galácticos a los halos.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- La astronomía galáctica es la astronomía galáctica.
- El medio interestelar es el medio interestelar.
Sus antecedentes:
- Las galaxias poseen halos de gas caliente que requieren reposición a medida que el gas se enfría.
- Las "chimeneas" galácticas son cavidades teóricas en el medio interestelar, potencialmente formadas por explosiones de supernovas.
- Se supone que estas chimeneas facilitan el transporte de gas caliente desde los discos galácticos hasta los halos.
Objetivo del estudio:
- Para presentar datos de mapeo de hidrógeno atómico de alta resolución.
- Proporcionar evidencia observacional de la existencia de chimeneas galácticas.
- Para investigar la formación y el estado actual de una chimenea galáctica.
Principales métodos:
- Cartografía de alta resolución del hidrógeno atómico.
- Análisis del brazo de Perseo de nuestra galaxia.
Principales resultados:
- Una clara evidencia de la existencia de una chimenea galáctica fue encontrada en el brazo de Perseo.
- La chimenea parece haber sido formada por vientos energéticos de un cúmulo de estrellas jóvenes y masivas.
- La chimenea puede haber alcanzado una etapa en la que se extiende hacia el halo galáctico.
Conclusiones:
- La evidencia observacional apoya el concepto de chimeneas galácticas.
- Los vientos estelares masivos son un mecanismo plausible para la formación de chimeneas.
- Las chimeneas galácticas juegan un papel en el intercambio dinámico de gas entre los discos galácticos y los halos.
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