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Updated: May 10, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

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Published on: October 9, 2012

Distribución inusual de energía espectral de una galaxia que anteriormente se informó que estaba en el corrimiento al

H W Chen¹, K M Lanzetta, S Pascarelle

¹Observatories of the Carnegie Institution of Washington, Pasadena, California 91101, USA. hchen@ociw.edu

|December 16, 2000

Resumen

Identificar las primeras galaxias es un desafío. Los nuevos datos fotométricos contradicen los hallazgos anteriores de una galaxia con desplazamiento al rojo z = 6.68, lo que hace que su desplazamiento al rojo y su naturaleza sean indeterminados.

Área de la Ciencia:

Cosmología Cosmología.
Formación y evolución de las galaxias.
La astronomía observacional es la astronomía de las observaciones.

Sus antecedentes:

La observación de galaxias lejanas ayuda a comprender la formación de galaxias y el Universo primitivo.
La identificación de galaxias con altos desplazamientos al rojo (z > 5) es difícil debido a su desvanecimiento y características espectrales limitadas.
Investigaciones anteriores sugirieron una galaxia en z = 6.68 basada en la emisión y ruptura de Lyman alfa.

Objetivo del estudio:

Para investigar la naturaleza de una galaxia candidata de alto desplazamiento al rojo previamente identificada.
Para conciliar datos de observación contradictorios con respecto a la distribución de energía espectral de la galaxia y las propiedades fotométricas.

Principales métodos:

Se realizó fotometría óptica en las bandas B y V.
Se realizó un análisis de la distribución espectral de la energía.
Se utilizó la comparación con las plantillas espectrales de galaxias conocidas.

Principales resultados:

Se observaron detecciones de luz moderadas en las imágenes de banda B y V.
Los resultados fotométricos son inconsistentes con el déficit de flujo esperado a corto plazo de la ruptura Lyman alfa para una galaxia z > 5.
La distribución de energía espectral del objeto no coincide con ninguna de las plantillas de galaxias establecidas en todos los desplazamientos al rojo.

Conclusiones:

El desplazamiento al rojo previamente determinado de z = 6.68 para esta galaxia ahora es incierto.
El verdadero desplazamiento al rojo y la clasificación del objeto siguen siendo indeterminados.
Se requieren más observaciones y análisis para caracterizar este objeto extragaláctico.

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