Spiral pattern in Virgo dwarf galaxy

The deep R-band CCD image of IC3328 (left; rendered in "negative" with dark objects and a bright background), obtained with FORS1 at VLT ANTU, illustrates the overall morphology of this galaxy that was classified as a dwarf elliptical galaxy: a quite smooth radially waning light distribution with a central nucleus. The total integration time of this composite image is 20 min with a seeing of 0.6 arcsec. After removal of the axis-symmetrical part of the light from the galaxy by a special image processing algorithm, the "residual" image reveals a remarkable 2-armed spiral structure (right). The field is 4 x 4 arcmin 2 ; North is up and east is left.

Kredit:

ESO

O snímku

Id:eso0018a
Typ:Pozorování
Datum zveřejnění:3. května 2000
Související články:eso0018
Velikost:761 x 371 px

O objektu

Jméno:IC 3328
Typ:Local Universe : Galaxy : Size : Dwarf
Local Universe : Galaxy : Type : Elliptical
Vzdálenost:55 milion světelné roky
Kategorie:Galaxies

Image Formats

největší JPEG
111,2 KB

Pozadí

1024x768
196,9 KB
1280x1024
261,2 KB
1600x1200
335,7 KB
1920x1200
401,7 KB
2048x1536
453,9 KB

Barvy & filtry

PásmoDalekohled
Optický
R
Very Large Telescope
FORS1