Hydrogen Gas Falling onto a Dark Matter Clump?

Sky field around the newly discovered 'blob'. The left image shows an HST image of part of the GOODS field, centred on the position of this unusal object. The two bottom right images show the same field observed in the B (blue) and R (red) bands with the ESO/MPG 2.2-m telescope at La Silla. In none of these images is the blob visible. It does only appear in the image obtained with FORS1 on the VLT, when observed through a dedicated narrow-band filter that detects hydrogen atoms that are around 11.6 billion light-years away. The top right image shows contours of this narrow-band emission overlaid on the HST image. It represents the field of view shown by the square in the top middle image. The position of the 'blob' is now obvious.

Credit:

ESO/HST

Bookmark and Share

About the Image

Id:eso0623a
Type:Observation
Release date:3 July 2006
Related releases:eso0623
Size:1588 x 842 px

About the Object

Name:GOODS South field
Type:• Early Universe : Nebula : Appearance : Dark
• Early Universe : Cosmology : Morphology : Deep Field
• X - Cosmology

Image Formats

Large JPEG
547.6 KB
Screensize JPEG
231.1 KB

Wallpapers

1024x768
409.7 KB
1280x1024
599.9 KB
1600x1200
798.3 KB
1920x1200
960.4 KB
2048x1536
1.1 MB

Colours & filters

BandTelescope
Optical
B
MPG/ESO 2.2-metre telescope
Optical
R
MPG/ESO 2.2-metre telescope
Optical Very Large Telescope
FORS1
Hubble Space Telescope

Also see our