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Formación estelar alrededor de agujeros negros supermasivos
1Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9SS, UK. iab1@st-andrews.ac.uk
Science (New York, N.Y.)
|August 23, 2008
Resumen
Las nubes moleculares gigantes cerca de agujeros negros supermasivos pueden formar estrellas en anillos excéntricos. Las simulaciones numéricas muestran la fragmentación de las nubes debido a las fuerzas de las mareas y el calentamiento, lo que explica las estrellas masivas jóvenes en los centros galácticos.
Área de la Ciencia:
- * Astrofísica es la astrofísica.
- * La astrofísica computacional es una astrofísica computacional
- * Formación de estrellas.
Sus antecedentes:
- * Jóvenes estrellas masivas se observan en anillos excéntricos cerca del agujero negro supermasivo del centro galáctico.
- * Las teorías existentes de formación de estrellas luchan por explicar su presencia debido al alto corte de marea y los desafíos de transporte.
Objetivo del estudio:
- * Para investigar el mecanismo de formación de jóvenes estrellas masivas en anillos excéntricos alrededor de agujeros negros supermasivos.
- * Para conciliar la evidencia observacional con los modelos teóricos de la formación de estrellas en entornos galácticos extremos.
Principales métodos:
- * Simulaciones numéricas de una nube molecular gigante que interactúa con un agujero negro supermasivo.
- * Análisis de la transferencia de energía, la fragmentación del disco y la distribución de la masa estelar.
Principales resultados:
- * Las nubes moleculares invasoras pueden formar discos excéntricos y atados alrededor de los agujeros negros supermasivos.
- * La fragmentación del disco y el calentamiento por compresión conducen a la formación de estrellas de masa relativamente alta.
- * Las estrellas simuladas heredan la excentricidad del disco, lo que podría explicar los anillos estelares observados.
Conclusiones:
- * La caída y fragmentación de nubes moleculares gigantes proporcionan un mecanismo viable para la formación de jóvenes estrellas masivas en anillos excéntricos.
- * Este proceso puede explicar la presencia de múltiples anillos estelares excéntricos observados cerca de agujeros negros supermasivos.
- * El modelo sugiere un ciclo repetitivo de formación estelar impulsado por las interacciones de las nubes con el agujero negro central.
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