Animated view of sky field and distant filament

This is an image of the entire sky field near the quasar Q 1205-30 as observed through the blue filter. The quasar is marked by a red hexagon while the LEGOs are indicated by yellow hexagons. A total of eight objects at redshift 3.04 are identified. One is located in front of the quasar and was found by means of its absorption of the quasar light, while the seven other objects were identified by their Lyman-alpha emission. As explained in the text, all these objects are found to lie inside a thin filament, here visualized in an animated GIF-display. Almost all of the other objects seen in this deep image are either stars in the outskirts of our own Milky Way galaxy or faint galaxies lying between us and the distant filament.

Technical information: this image is based on 13 400-sec exposures in a B(lue) optical filter, obtained with VLT ANTU and the multi-mode FORS1 instrument in March 2000. The seeing was 0.7 - 1.0 arcsec and the field measures 6.8 x 6.8 arcmin 2. North is up and East is left.

Bildnachweis:

ESO

Über das Bild

ID:eso0120c
Typ:Zusammenstellung
Veröffentlichungsdatum:18. Mai 2001
Dazugehörige Veröffentlichungen:eso0120
Größe:120 x 120 px

Über das Objekt

Name:Q1205-30
Typ:Early Universe : Cosmology : Morphology : Large-Scale Structure
Early Universe : Galaxy : Activity : AGN : Quasar
Entfernung:z=3.04 (Rotverschiebung)
Kategorie:Cosmology
Quasars and Black Holes

Bildformate

Großes JPEG
20,3 KB

Farben & Filter

SpektralbereichTeleskop
Optisch
B
Very Large Telescope
FORS1

Exposure time: 400s