The quasar without a home: HE0450-2958

(Left) HST image of the z=0.285 quasar HE0450-2958. No obvious host galaxy centred on the quasar is seen. Only a strongly disturbed and star forming companion galaxy is seen near the top of the image. (Right) Same image shown after applying an efficient image sharpening method known as MCS-deconvolution. In contrast to the usual cases, as the ones shown in ESO Press Photo eso0529, the quasar is not situated at the centre of an extended host galaxy, but on the edge of a compact structure, whose spectra (see ESO Press Photo eso0529) show it to be composed of gas ionised by the quasar radiation. This gas may have been captured through a collision with the star-forming galaxy. The star indicated on the figure is a nearby galactic star seen by chance in the field of view.

Credit:

HST

Over de afbeelding

Id:eso0529b
Type:Collage
Publicatiedatum:14 september 2005
Gerelateerde berichten:eso0529
Grootte:3265 x 1464 px

Over het object

Naam:HE0450-2958
Type:Early Universe : Galaxy : Activity : AGN : Quasar
Afstand:z=0.285 (roodverschuiving)
Categorie:Cosmology
Quasars and Black Holes

Image Formats

Grote JPEG
657,5 KB

Kleuren & filters

BandTelescoop
OptischVery Large Telescope
OptischHubble Space Telescope

 

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