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.
Telif:ESO/M. Hayes
Görüntü Hakkında
Kimlik: | eso1130a |
Tür: | Gözlem |
Yayın tarihi: | 17 Ağustos 2011 19:00 |
Bağlantılı bültenler: | eso1632, eso1130 |
Boyut: | 2042 x 2042 px |
Nesne Hakkında
Adı: | LAB-1 |
Tür: | Early Universe : Cosmology : Morphology : Large-Scale Structure |
Uzaklık: | z=3.1 (kırmızıya kayma) |
Constellation: | Aquarius |
Kategori: | Cosmology |
Duvarkağıtları
Koordinatlar
Position (RA): | 22 17 25.78 |
Position (Dec): | 0° 12' 39.20" |
Field of view: | 1.60 x 1.60 arcminutes |
Yönelim: | Kuzey yönü 9.9° sağ derece kadar dik konumdan sapma göstermektedir |
Renkler & Filtreler
Bant | Dalgaboyu | Teleskop |
---|---|---|
Optik B | Very Large Telescope FORS2 | |
Optik Pseudogreen (B+R) | Very Large Telescope FORS2 | |
Optik OIII | 500 nm | Very Large Telescope FORS2 |
Optik V | Very Large Telescope FORS2 |