Emission of the galaxy BzK-15504

H-alpha line emission of the galaxy BzK-15504, at cosmological redshift of 2.38, corresponding to a time of 3 billion years after the Big Bang. The colours show whether the ionised gas is moving away from us (red), toward us (blue) or is stationary (green), relative to the overall rest frame of the galaxy. These data, obtained with SINFONI and adaptive optics (resulting in a resolution of 0.15", or 4,000 light years at the distance of the galaxy), show for the first time very clearly the gas motions in such a distant galaxy in the Early Universe. The galaxy appears to be a disc, like our Milky Way, and rotates at 230 km/s about the yellow axis, which is centred on the nucleus of the galaxy (white cross).

Crédit:

ESO

À propos de l'image

Identification:eso0631a
Type:Observation
Date de publication:17 août 2006
Communiqués de presse en rapport:eso0631
Taille:2358 x 2598 px

À propos de l'objet

Nom:BzK 15504
Type:Early Universe : Galaxy : Activity : AGN
Distance:z=2.38 (redshift)
Catégorie:Galaxies

Image Formats

Grand JPEG
384,2 Kio
JPEG taille écran
121,3 Kio

Fonds d'écran

1024x768
111,6 Kio
1280x1024
149,2 Kio
1600x1200
188,3 Kio
1920x1200
206,7 Kio
2048x1536
262,6 Kio

Couleurs & filtres

DomaineTélescope
Infrarouge
H-alpha
Very Large Telescope
SINFONI

 

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