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: | 1881 x 1350 px |
About the Object
| Name: | RXS J1131-1231 |
| Type: | Early Universe : Galaxy : Type : Gravitationally Lensed Early Universe : Galaxy : Activity : AGN : Quasar |
| Distance: | z=0.66 (redshift) |
| Category: | Cosmology Galaxies Quasars and Black Holes |
Colours & filters
| Band | Telescope |
|---|---|
| Infrared Near-IR | ESO 3.6-metre telescope EFOSC2 |
| Optical | ESO 3.6-metre telescope EFOSC2 |