Quasar ULAS

Artist's conception of how the quasar would appear close up. The very hot extremely luminous quasar at the center of the image is very bright at ultraviolet wavelengths, and light from the quasar ionizes the surrounding gas, producing the red color that is characteristic of ionized hydrogen. Faint compact galaxies that have just been born appear in the background. The galaxies' hot stars also ionize their surroundings, but only in the immediate vicinity as they are far less luminous than the quasar which can ionize over a much larger volume.

Credit:

International Gemini Observatory/AURA,/Lynette Cook

About the Image

Id:gemini1107a
Type:Artwork
Release date:June 29, 2011, 8 p.m.
Related releases:gemini1107
Size:3300 x 2550 px

About the Object

Name:ULAS
Category:Illustrations

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