Dark galaxies spotted for the first time (annotated)

This deep image shows the region of the sky around the quasar HE0109-3518. The quasar is labelled with a red circle near the centre of the image. The energetic radiation of the quasar makes dark galaxies glow, helping astronomers to understand the obscure early stages of galaxy formation. The faint images of the glow from 12 dark galaxies are labelled with blue circles. Dark galaxies are essentially devoid of stars, therefore they don’t emit any light that telescopes can catch. This makes them virtually impossible to observe unless they are illuminated by an external light source like a background quasar.

This image combines observations from the Very Large Telescope, tuned to detect the fluorescent emissions produced by the quasar illuminating the dark galaxies, with colour data from the Digitized Sky Survey 2.

Telif:

ESO, Digitized Sky Survey 2 and S. Cantalupo (UCSC)

Görüntü Hakkında

Kimlik:eso1228b
Tür:Gözlem
Yayın tarihi:11 Temmuz 2012 12:00
Bağlantılı bültenler:eso1228
Boyut:1600 x 1700 px

Nesne Hakkında

Adı:HE 0109-3518
Tür:Early Universe : Galaxy
Early Universe : Galaxy : Activity : AGN : Quasar
Uzaklık:z=2.4 (kırmızıya kayma)
Constellation:Sculptor
Kategori:Quasars and Black Holes

Görüntü Türleri

Büyük JPEG
899,9 KB

Yaklaştırma


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1024x768
252,9 KB
1280x1024
424,5 KB
1600x1200
677,9 KB
1920x1200
613,0 KB
2048x1536
813,4 KB

Koordinatlar

Position (RA):1 11 43.68
Position (Dec):-35° 3' 0.94"
Field of view:6.70 x 7.12 arcminutes
Yönelim:Kuzey yönü 0.1° sol derece kadar dik konumdan sapma göstermektedir

Renkler & Filtreler

BantDalgaboyuTeleskop
Optik
B
Digitized Sky Survey 2
Optik
R
Digitized Sky Survey 2
Kırmızı ötesi
I
Digitized Sky Survey 2
Optik
B
414 nmVery Large Telescope
FORS2

 

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