The spiral rebuilding scenario

Schematic representation of the newly proposed scenario of "spiral galaxy rebuilding": galaxies collide (1), then merge (2), inducing a burst of stellar formation activity. After the merging, the gas and the stars fall towards the centre in a very compact structure (3). Part of the gas which did not fall back initially, gradually rebuilds a disc around the compact structure, making a new spiral galaxy (4 and 5). The images are pictures of distant galaxies at various redshifts taken by the Hubble Space Telescope. The central panel displays the star formation rate as a function of time. The numbers coincide with the numbers shown on the images.

Herkunftsnachweis:

ESO

Über das Bild

ID:eso0502b
Typ:Aufsuchkarte
Veröffentlichungsdatum:13. Januar 2005
Dazugehörige Veröffentlichungen:eso0502
Größe:941 x 712 px

Über das Objekt

Name:Galaxies
Typ:Unspecified : Galaxy : Type : Spiral
Kategorie:Galaxies

Bildformate

Großes JPEG
98,9 KB