Galáxia anã esferoidal

Multi tool use
Multi tool use







NGC 147, uma galáxia anã esferoidal do Grupo Local


Galáxia anã esferoidal (em inglês Dwarf spheroidal galaxy, dSph) é um termo em astronomia para designar galáxias de baixa luminosidade que são companheiras da Via Láctea e de sistemas semelhantes em que estão as companheiras da Galáxia de Andrômeda (M31). Embora semelhantes às galáxias anãs elípticas na aparência e propriedades como pouco ou nenhum gás, poeira ou recente formação estelar, são aproximadamente esferoidais em forma, geralmente de baixa luminosidade, e só são reconhecidas como galáxias satélites no Grupo Local.[1]



Ver também |



  • Galáxia anã

  • Galáxia anã elíptica

  • Classificação de Hubble

  • Formação e evolução de galáxias

  • Aglomerado de galáxias

  • Galáxia irregular

  • Grupo Local



Referências |





  1. ↑ Mashchenko, Sergey; Sills, Alison; Couchman, H. M. (março de 2006). «Constraining Global Properties of the Draco Dwarf Spheroidal Galaxy». The Astrophysical Journal. 640 (1): 252–269. doi:10.1086/499940 




Ligações externas |



  • A popular overview

  • Universe Today, Some Galaxies Are Made Almost Entirely of Dark Matter































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