Estrela OB

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Estrela OB são estrelas massivas e quentes que aparecem em grupos chamados associações OB.
Elas têm uma vida curta, e portanto não se afastam muito do local onde foram formadas. Durante sua vida,
elas emitem grandes quantidades de radiação ultravioleta. Esta radiação rapidamente ioniza o gás
da gigante nuvem molecular que as envolvem, formando uma região HII ou esfera de Strömgren.
Referências |
- B. Cameron Reed (2003), CATALOG OF GALACTIC OB STARS, The Astronomical Journal, vol.125, p.2531–2533
Links externoss |
[1] - Scientia Astrophysical Organization's star classification page
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