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.

Oikeudet:

HST

Kuvasta

Tunnistus:eso0529b
Tyyppi:Kokoelma
Julkaisupäivä:14. syyskuuta 2005
Vastaavat julkaisut:eso0529
Koko:3265 x 1464 px

Kohteesta

Nimi:HE0450-2958
Tyyppi:Early Universe : Galaxy : Activity : AGN : Quasar
Etäisyys:z=0.285 (punasiirtymä)
Kategoria:Cosmology
Quasars and Black Holes

Kuvaformaatit

Suuri JPEG
657,5 KB
Kokoruudun JPEG
110,1 KB

Värit ja suotimet

KaistaTeleskooppi
OptinenVery Large Telescope
OptinenHubble Space Telescope

 

Katso myös