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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Published on: December 18, 2015
La detección heterodina submilimétrica de monóxido de carbono interestelar a 434 micrómetros es una detección
Science (New York, N.Y.)
|February 6, 1981
Resumen
Los astrónomos detectaron monóxido de carbono en la nube molecular de Orión utilizando un nuevo radiómetro. El gas que produce esta emisión es ópticamente delgado y más caliente que 180 K.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Espectroscopia Submilimétrica Espectroscopia submilimétrica Espectroscopia submilimétrica Espectroscopia submilimétrica Espectroscopia submilimétrica Espectroscopia submilimétrica
- Estudios de la nube molecular Estudios de la nube molecular
Sus antecedentes:
- Los radiómetros heterodinos submilimétricos son cruciales para las observaciones astronómicas.
- Comprender las nubes moleculares como Orión requiere un análisis espectral detallado.
Objetivo del estudio:
- Desarrollar y utilizar un nuevo radiómetro heterodino submilimétrico para aplicaciones astronómicas.
- Para detectar y caracterizar la transición rotacional del monóxido de carbono en la nube molecular de Orión.
Principales métodos:
- Desarrollo de un radiómetro montado en telescopio con un oscilador local láser bombeado ópticamente y un mezclador de diodos Schottky.
- Mediciones de alta frecuencia y resolución espacial.
- Detección de la transición rotacional J = 6 --> 5 del monóxido de carbono a 434 micrómetros.
Principales resultados:
- El radiómetro desarrollado logró una temperatura de ruido inferior a 4000 K (banda doble).
- Se ha detectado con éxito la transición de monóxido de carbono en la nube molecular de Orión.
- Las mediciones indican que la emisión se origina en un gas ópticamente delgado con una temperatura superior a 180 K.
Conclusiones:
- El nuevo radiómetro es eficaz para las observaciones astronómicas, ofreciendo alta sensibilidad y resolución.
- La nube molecular de Orión contiene un componente significativo de gas caliente y ópticamente delgado trazado por monóxido de carbono.
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