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Detección de gas molecular en el cuásar BR1202 - 0725 con desplazamiento al rojo z = 4.69
K Ohta1, T Yamada, K Nakanishi
1Department of Astronomy, Kyoto University, Japan.
Nature
|August 1, 1996
Resumen
Los investigadores detectaron la emisión de monóxido de carbono (CO) de un cuásar distante, BR1202-0725, en el corrimiento al rojo z = 4.69. Este hallazgo revela una galaxia masiva con una cantidad sustancial de hidrógeno molecular, lo que indica una importante formación estelar temprana.
Área de la Ciencia:
- La astronomía y la astrofísica.
- El gas cósmico y la evolución de las galaxias
Sus antecedentes:
- La detección de gas molecular, crucial para la formación estelar, en el Universo temprano es un desafío.
- Las detecciones anteriores de gas molecular con un alto corrimiento al rojo (z ≈ 2.5) se limitaban a objetos con lentes gravitacionales.
Objetivo del estudio:
- Para reportar la detección de emisión de monóxido de carbono (CO) de un cuásar radio silencioso a un alto corrimiento al rojo.
- Para investigar la presencia y masa de gas molecular en el Universo temprano.
Principales métodos:
- Observación de la línea de emisión de monóxido de carbono (CO).
- Determinación del corrimiento al rojo del cuásar BR1202-0725.5.
Principales resultados:
- Detección de la emisión de CO del cuásar radio silencioso BR1202-0725 en el corrimiento al rojo z = 4.69.
- Estimación de aproximadamente 10 ^ 11 masas solares de hidrógeno molecular asociado con el cuásar.
- La masa molecular del gas es comparable a la masa estelar de las galaxias luminosas actuales.
Conclusiones:
- BR1202-0725 representa una galaxia masiva en el Universo temprano.
- El gas está concentrado en el centro, lo que sugiere que se está produciendo una explosión significativa de formación estelar.
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