Galaxy cluster CL2244-02 with gravitational arcs

The image is a colour composite image of the galaxy cluster CL2244-02 (redshift z = 0.3), combining a 20 min jittered ISAAC Ks (2.16µm) exposure with 15 min V (green-yellow) and R (red) exposures, obtained with the VLT Test Camera at the UT1 Nasmyth focus. In addition to the prominent blue arc, produced by gravitational lensing of a galaxy at redshift z = 2.24, there are also notable, very red arcs, both closer to the centre and further out. They were only detected in the infrared image and are probably due to lensing of a much more distant galaxy.

Bildnachweis:

ESO

Über das Bild

ID:eso9856d
Typ:Beobachtung
Veröffentlichungsdatum:26. November 1998
Dazugehörige Veröffentlichungen:eso9856
Größe:2872 x 2865 px

Über das Objekt

Name:CL2244-02
Typ:Early Universe : Galaxy : Grouping : Cluster
Entfernung:z=0.3 (Rotverschiebung)
Constellation:Aquarius
Kategorie:Galaxy Clusters

Bildformate

Großes JPEG
2,8 MB

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Bildschirm-Hintergrundbilder

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1920x1200
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2048x1536
1,4 MB

Koordinaten

Position (RA):22 47 12.10
Position (Dec):-2° 5' 44.96"
Field of view:1.37 x 1.37 arcminutes
Orientierung:Die Nordrichtung liegt 37.4° links zur Vertikale

Farben & Filter

SpektralbereichWellenlängeTeleskop
Infrarot
Near-IR
2.16 μmVery Large Telescope
ISAAC
Optisch
V
Very Large Telescope
Optisch
R
Very Large Telescope