Lyman-alpha Forest at z~2.0 in quasar spectrum

This chart shows a small part of the normalized UV-spectrum of the 16-mag QSO HE22-28 at z = 2.4, exposed for a total of 7.5 hours at spectral resolution about 40,000. It provides a fine illustration of the excellent quality of the reduced data from this instrument. Most of the lines are due to Lyman-alpha clouds at redshifts in the little-studied interval z = 1.9-2.1, cf. the text.

Credit:

ESO

Over de afbeelding

Id:eso0013f
Type:Observatie
Publicatiedatum:6 april 2000
Gerelateerde berichten:eso0013
Grootte:800 x 392 px

Over het object

Naam:QSO HE22-28
Type:Early Universe : Galaxy : Activity : AGN : Quasar
Afstand:z=2.4 (roodverschuiving)
Categorie:Quasars and Black Holes

Afbeeldingstypen

Grote JPEG
71,9 KB

Kleuren & filters

BandTelescoop
UltravioletVery Large Telescope
UVES