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.

Autorska prava:

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

O slici

Id:eso1228b
Tip:Opservacija
Datum objavljivanja:11. jul 2012. 12:00
Povezana saopštenja:eso1228
Veličina:1600 x 1700 px

O objektu

Naziv:HE 0109-3518
Tip:Early Universe : Galaxy
Early Universe : Galaxy : Activity : AGN : Quasar
Udaljenost:z=2.4 (crveni pomak)
Constellation:Sculptor
Kategorija:Quasars and Black Holes

Formati slika

Veliki JPEG
899,9 KB

Zumiranje


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Koordinate

Position (RA):1 11 43.68
Position (Dec):-35° 3' 0.94"
Field of view:6.70 x 7.12 arcminutes
Orijentacija:Sever je 0.1°levo od vertikale

Boje i flteri

OpsegTalasna dužinaTeleskop
Optički
B
Digitized Sky Survey 2
Optički
R
Digitized Sky Survey 2
Infracrveni
I
Digitized Sky Survey 2
Optički
B
414 nmVery Large Telescope
FORS2

 

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