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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
Over de afbeelding
Id: | eso0506b |
Type: | Observatie |
Publicatiedatum: | 2 maart 2005 |
Gerelateerde berichten: | eso0506 |
Grootte: | 1816 x 1338 px |
Over het object
Naam: | XMMU J2235.3-2557 |
Type: | Early Universe : Galaxy : Grouping : Cluster |
Afstand: | z=1.39 (roodverschuiving) |
Categorie: | Galaxy Clusters |
Kleuren & filters
Band | Golflengte | Telescoop |
---|---|---|
Optisch R | 657 nm | Very Large Telescope FORS2 |
Infrarood Z | 910 nm | Very Large Telescope FORS2 |
Infrarood K | 2.2 μm | Very Large Telescope ISAAC |