Galáxia Anã de Draco

Galáxia Anã de Draco
Galáxia Anã de Draco
Dados observacionais (J2000)
Constelação Draco
Tipo E pec
Asc. reta 17h 20m 12.4s
Declinação +57° 54′ 55″
Distância 260 ± 30 kal (80 ± 10 kpc)
Redshift -292 ± 21 km/s
Magnit. apar. 10.9
Dimensões 35′.5 × 24′.5
Outras denominações
Draco Dwarf Spheroidal, Draco dSph, UGC 10822,

PGC 60095, DDO 208

Mapa

A Galáxia Anã de Draco é uma galáxia satélite da Via Láctea e faz parte do Grupo Local. Encontra-se na constelação de Draco, a 260.000 anos-luz da Terra. Com um diâmetro de aproximadamente 2.000 anos-luz, é uma das galáxias mais tênues conhecidas.

Descoberta em 1954 por Albert G. Wilson, é uma das galáxias mais próximas da nossa. Contém uma população velha de estrelas e não tem quantidades significativas de matéria interestelar. Estudos recentes indicam que seu núcleo pode ser um lugar excepcionalmente ideal para a identificação de matéria escura.[1]

Ver também

Referências

  1. «C. Tyler, University of Chicago, (em inglês)» (PDF). Consultado em 10 de junho de 2009. Arquivado do original (PDF) em 26 de fevereiro de 2006 

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