Os limites externos do Sistema Solar
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Os limites externos do Sistema Solar
• A nuvem de Oort– Deve conter os objetos mais distantes do Sistema Solar– Cometas de longo período: são evidência de que existe a nuvem de
Oort.– Origem da Nuvem de Oort: objetos espalhados pelos grandes planetas
nos primórdios do Sistema Solar, cujas órbitas foram circularizadas a grandes distâncias do Sol pela perturbação de estrelas passantes e maré galática (filminho)
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Os objetos espalhados e destacados
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A origem dos destacados(Gomes et al. 2005, CMDA 91:109)
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Destacados fossilizados
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A origem de Buffy (2004 XR190)
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Filminho
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Sedna e a nuvem de Oort interna
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Modelo I: Sol num aglomerado denso de estrelas (Brasser et al. 2006, Icarus 184, 59)
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Modelo II: companheira solar(Gomes et al. 2006, Icarus 184, 589)
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Objetos extrasolares na população tipo-Sedna
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