Giant space blob glows from within

This image shows one of the largest known single objects in the Universe, the Lyman-alpha blob LAB-1. This picture is a composite of two different images taken with the FORS instrument on the Very Large Telescope (VLT)  — a wider image showing the surrounding galaxies and a much deeper observation of the blob itself at the centre made to detect its polarisation. The intense Lyman-alpha ultraviolet radiation from the blob appears green after it has been stretched by the expansion of the Universe during its long journey to Earth. These new observations show for the first time that the light from this object is polarised. This means that the giant "blob" must be powered by galaxies embedded within the cloud. 

Źródło:

ESO/M. Hayes 

O zdjęciu

Identyfikator:eso1130a
Typ:Obserwacje
Data publikacji:17 sierpnia 2011 19:00
Powiązane komunikaty:eso1632, eso1130
Rozmiar:2042 x 2042 px

O obiekcie

Nazwa:LAB-1
Typ:Early Universe : Cosmology : Morphology : Large-Scale Structure
Odległość:z=3.1 (redshift)
Constellation:Aquarius
Kategoria:Cosmology

Formaty zdjęć

Wielki JPEG
597,4 KB

Powiększenie


Tapety

1024x768
170,5 KB
1280x1024
251,1 KB
1600x1200
324,8 KB
1920x1200
347,4 KB
2048x1536
450,1 KB

Współrzędne

Pozycja (RA):22 17 25.78
Pozycja (Dec):0° 12' 39.20"
Pole widzenia:1.60 x 1.60 arcminutes
Orientacja:North is 9.9° prawo of vertical

Kolory i filtry

PasmoDługość faliTeleskop
Optyczny
B
Very Large Telescope
FORS2
Optyczny
OIII
500 nmVery Large Telescope
FORS2
Optyczny
Pseudogreen (B+R)
Very Large Telescope
FORS2
Optyczny
V
Very Large Telescope
FORS2