The GOODS-South field

This composite image of the GOODS-South field — the result of an extremely deep survey using two of the four giant 8.2-metre telescopes composing ESO’s Very Large Telescope (VLT) and a unique custom-built filter — shows some of the faintest galaxies ever seen. It also allows astronomers to determine that 90% of galaxies whose light took 10 billion years to reach us have gone undiscovered.

The image is based on data acquired with the FORS and HAWK-I instruments on the VLT. It shows in particular two varieties of light emitted by excited hydrogen atoms, known as Lyman-alpha and H-alpha.

Källa:

ESO/M. Hayes

Om bilden

ID:eso1013a
Typ:Observation
Publiceringsdatum:24 mars 2010 19:00
Relaterade pressmeddelanden:eso1013
Storlek:1787 x 1787 px

Om objektet

Namn:GOODS South field
Typ:Early Universe : Galaxy : Grouping : Cluster
Avstånd:z=2.2 (rödförskjutning)
Constellation:Fornax
Kategori:Galaxy Clusters

Bildformat

Stor jpeg
802,5 kB
Skärmstor jpeg
237,8 kB

Skrivbordsunderlägg

1024x768
233,2 kB
1280x1024
359,8 kB
1600x1200
506,0 kB
1920x1200
539,3 kB
2048x1536
724,0 kB

Koordinater

Position (RA):3 32 32.74
Position (Dec):-27° 47' 20.40"
Field of view:7.47 x 7.47 arcminutes
Orientering:Nord är 44.4° vänster om lodrätt

Färger och filter

BandVåglängdTeleskop
Synligt ljus
Ly-alpha
390 nmVery Large Telescope
FORS1
Synligt ljus
H-alpha
2.1 μmVery Large Telescope
HAWK-I