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Lo que el viento se llevó: el origen de las galaxias S0 en cúmulos
Science (New York, N.Y.)
|June 2, 2000
Resumen
La presión de Ram y el desprendimiento viscoso eliminan completamente el hidrógeno atómico de las galaxias espirales en 100 millones de años. Estos procesos explican la morfología de las galaxias y el truncamiento de la formación estelar observado en los cúmulos.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Cosmología Cosmología.
- Evolución de la galaxia Evolución de la galaxia.
Sus antecedentes:
- Las galaxias en los cúmulos interactúan con el medio caliente intracúmulo.
- Las galaxias espirales poseen un medio interestelar frío crucial para la formación de estrellas.
Objetivo del estudio:
- Para simular la interacción entre el medio intracluster y el medio interestelar de la galaxia espiral.
- Para investigar el impacto de la presión ram y el desmontaje turbulento en el contenido de gas galáctico.
Principales métodos:
- Simulaciones hidrodinámicas tridimensionales y de alta resolución.
- Modelado de la interacción entre el gas ionizado caliente y el gas neutro frío.
Principales resultados:
- La presión de ram y la eliminación turbulenta / viscosa eliminan el 100% del hidrógeno atómico de las galaxias luminosas.
- El desprendimiento ocurre dentro de los 100 millones de años.
- Los mecanismos explican la morfología de la galaxia S0 y el truncamiento de la formación estelar.
Conclusiones:
- La presión ram y el desprendimiento son los principales impulsores de la transformación de las galaxias en cúmulos.
- Estos procesos concilian las simulaciones con los datos de observación sobre la morfología HI y la formación estelar.
- El estudio aclara la evolución de las galaxias dentro de entornos densos.
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