Giant space blob glows from within

This image shows one of the largest known single objects in the Universe, the Lyman-alpha blob LAB-1. This picture is a composite of two different images taken with the FORS instrument on the Very Large Telescope (VLT)  — a wider image showing the surrounding galaxies and a much deeper observation of the blob itself at the centre made to detect its polarisation. The intense Lyman-alpha ultraviolet radiation from the blob appears green after it has been stretched by the expansion of the Universe during its long journey to Earth. These new observations show for the first time that the light from this object is polarised. This means that the giant "blob" must be powered by galaxies embedded within the cloud. 

Предоставлено:

ESO/M. Hayes 

Об изображении

ID:eso1130a
Тип:Наблюдение
Дата выпуска релиза [date]:17 августа 2011 г. 19:00
Связанные релизы:eso1632, eso1130
Размер:2042 x 2042 px

Об объекте

Название:LAB-1
Тип:Early Universe : Cosmology : Morphology : Large-Scale Structure
Расстояние:z=3.1 (сдвиг)
Constellation:Aquarius
Категория:Cosmology

Форматы изображений

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Масштаб


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Координаты

Position (RA):22 17 25.78
Position (Dec):0° 12' 39.20"
Field of view:1.60 x 1.60 arcminutes
Ориентация:Север на 9.9° справа от вертикали

Цвета и фильтры

ДиапазонДлина волныТелескоп
Оптический
B
Very Large Telescope
FORS2
Оптический
Pseudogreen (B+R)
Very Large Telescope
FORS2
Оптический
OIII
500 nmVery Large Telescope
FORS2
Оптический
V
Very Large Telescope
FORS2