False colour image of XMMU J2235.3-2557
False colour image of the XMMU J2235.3-2557 cluster of galaxies, overlaid with the X-ray intensity contours derived from the ESA XMM-Newton data. The red channel is a VLT-ISAAC image (exposure time: 1 hour) obtained in the near-infrared Ks-band (at wavelength 2.2 microns); the green channel is a VLT-FORS2 z-band image (910 nm; 480 sec); the blue channel is a VLT-FORS2 R-band image (; 657 nm; 1140 sec). The VLT reveals 12 reddish galaxies, of elliptical types, as members of the cluster.
Credit:ESO
About the Image
Id: | eso0506b |
Type: | Observation |
Release date: | 2 March 2005 |
Related releases: | eso0506 |
Size: | 1816 x 1338 px |
About the Object
Name: | XMMU J2235.3-2557 |
Type: | Early Universe : Galaxy : Grouping : Cluster |
Distance: | z=1.39 (redshift) |
Category: | Galaxy Clusters |
Colours & filters
Band | Wavelength | Telescope |
---|---|---|
Optical R | 657 nm | Very Large Telescope FORS2 |
Infrared Z | 910 nm | Very Large Telescope FORS2 |
Infrared K | 2.2 μm | Very Large Telescope ISAAC |