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File:Lyman-alpha blob LAB-1.jpg

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Summary

Description
English: 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.
Date
Source http://www.eso.org/public/images/eso1130a/
Author ESO/M. Hayes

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attribution
This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution: ESO/M. Hayes
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17 August 2011

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current13:51, 18 August 2011Thumbnail for version as of 13:51, 18 August 20112,042 × 2,042 (671 KB)Jmencisom

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