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.

Kredit:

ESO

O snímku

Id:eso9856d
Typ:Pozorování
Datum zveřejnění:26. listopadu 1998
Související články:eso9856
Velikost:2872 x 2865 px

O objektu

Jméno:CL2244-02
Typ:Early Universe : Galaxy : Grouping : Cluster
Vzdálenost:z=0.3 (rudý posuv)
Constellation:Aquarius
Kategorie:Galaxy Clusters

Image Formats


Zvětšovatelný


Pozadí

1024x768
501,2 KB
1280x1024
774,7 KB
1600x1200
1,0 MB
1920x1200
1,1 MB
2048x1536
1,4 MB

Souřadnice

Position (RA):22 47 12.10
Position (Dec):-2° 5' 44.96"
Field of view:1.37 x 1.37 arcminutes
Orientace:Sever je 37.4° levá od svislé osy

Barvy & filtry

PásmoVlnová délkaDalekohled
Infračervený
Near-IR
2.16 μmVery Large Telescope
ISAAC
Optický
V
Very Large Telescope
Optický
R
Very Large Telescope