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.

Crediti:

ESO

Riguardo l'immagine

Identificazione:eso0502b
Tipo:Mappa
Data di rilascio:13 Gennaio 2005
Notizie relative:eso0502
Grandezza:941 x 712 px

Riguardo all'oggetto

Nome:Galaxies
Tipo:Unspecified : Galaxy : Type : Spiral
Categoria:Galaxies

Formati delle immagini

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98,9 KB