Grupo de galáxias

Multi tool use
Multi tool use




Um grupo de galáxias[1][2][3] é uma agregação de galáxias compreendendo cerca de 50 ou menos membros gravitacionalmente ligadaos, cada uma, pelo menos, tão luminosa como a Via Láctea (cerca de 1010 vezes a luminosidade do Sol); coleções de galáxias maiores do que os grupos que são agrupamentos de primeira ordem são chamados de aglomerados de galáxias.[4] Os grupos e aglomerados de galáxias em si podem ser agrupados, em superaglomerados de galáxias.


A Via Láctea é parte de um grupo de galáxias chamado Grupo Local.[5]



Lista |



Ver artigo principal: Lista de aglomerados de galáxias






















Grupos notáveis
Grupo
 Notas

Grupo Local
 O grupo onde a Via Láctea, incluindo a Terra, está localizada.

Quinteto de Stephan
 Um dos grupos mais fotogênicos.

Grupo Bullet
 O grupo que mescla e exibe a separação de matéria escura da matéria normal.

Estão listados aqui somente alguns dos grupos mais notáveis; para mais grupos, consulte o artigo lista.


Ver também |



  • Aglomerado de galáxias

  • Superaglomerado de galáxias

  • Projeto illustris



Referências




  1. ↑ Bärbel Koribalski (2004). «The NGC 6221/15 Galaxy Group» 


  2. ↑ Hartmut Frommert & Christine Kronberg. «Groups and Clusters of Galaxies with Messier objects». SEDS 


  3. ↑ «Object classification in SIMBAD». SIMBAD. Novembro de 2013 


  4. ↑ L.S. Sparke & J.S. Gallagher (2007). Galaxies in the Universe: an Introduction 2nd ed. [S.l.]: Cambridge University Press. 278 páginas. ISBN 9780521671866 


  5. ↑ Mike Irwin. «The Local Group». Consultado em 7 de novembro de 2009 






























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