Spectrum of quasar 0046-282 at z=3.83

This chart shows the spectrum of Q0046-282, obtained with FORS1 at VLT UT1. The redshift z = 3.83 has been deduced from the measured wavelengths of the indicated lines of multiple ionized elements. The redshift z of this quasar is larger than 3. The wavelength of the emitted light is therefore received at wavelengths that are larger (longer) by factors of more than 4 than the rest wavelength (i.e. at the quasar). In each of the diagrammes, the redshift z of the object and the (smaller) redshifts of some tentatively identified absorption lines are indicated. These absorption lines are formed in gas clouds that are located along the line of sight between the quasars and us. When studied in detail, these high-quality FORS spectra will provide accurate information on the chemical composition of the gas in these remote objects. The spectrum was obtained in the long-slit spectroscopy mode of FORS1. The total exposure time was 20 minutes.

Crédit:

ESO

À propos de l'image

Identification:eso9920s
Type:Observation
Date de publication:27 février 1999
Communiqués de presse en rapport:eso9920, eso9917
Taille:3000 x 1836 px

À propos de l'objet

Nom:QSO 0046-282, Spectrum
Type:Early Universe : Galaxy : Activity : AGN : Quasar
Distance:z=3.83 (redshift)
Catégorie:Quasars and Black Holes

Formats des images

Grand JPEG
572,7 Kio
JPEG taille écran
128,2 Kio

Couleurs & filtres

DomaineTélescope
VisibleVery Large Telescope
FORS1