Spectra of the RXS J1131-1231 Lensing System

The spectra of two of the star-like images in the gravitational lens system RXS J1131-1231 (labeled A and D in the top panel) are very similar and are therefore from the same object, i.e., the lensed quasar. The emission lines identified in these spectra are typical of a quasar and the redshft is measured as z = 0.66. The bottom panel shows the spectrum of the lensing, elliptical galaxy at redshift z=0.3.

Credit:

ESO

About the Image

Id:eso0321b
Type:Observation
Release date:16 July 2003
Related releases:eso0321
Size:970 x 690 px

About the Object

Name:RXS J1131-1231
Type:• Early Universe : Galaxy : Type : Gravitationally Lensed
• Early Universe : Galaxy : Activity : AGN : Quasar
• X - Galaxies
• X - Cosmology
• X - Quasars & Black Holes
Distance:z=0.66 (redshift)

Image Formats

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Colours & filters

BandTelescope
Optical ESO 3.6-metre telescope
EFOSC2
Infrared
Near-IR
ESO 3.6-metre telescope
EFOSC2

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