Um estudo sobre o momentum angular total de estrelas com planetas
Since Michel Mayor and his student Didier Queloz s pioneer announcement, in 1995, of the existence of a planet orbiting the star 51 Peg, up to present date, 695 extrasolar planets orbiting stars of spectral type F, G, K and M have been discovered. A study on the behavior of the total angular momentu...
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| Formato: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/16628 |
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| Resumo: | Since Michel Mayor and his student Didier Queloz s pioneer announcement, in 1995, of the
existence of a planet orbiting the star 51 Peg, up to present date, 695 extrasolar planets orbiting
stars of spectral type F, G, K and M have been discovered. A study on the behavior of the total
angular momentum of the planetary systems known up to present date becomes relevant when
we know that about 98% of the angular momentum of the solar system is associated with the
planets, although they represent only 0.15 percent of the mass of the whole system. In this
dissertation we study the behavior of stellar angular momentum, orbital angular momentum
and total angular momentum in a sample of 282 stars harboring planets, including 40 multiple
systems. We observed that planetary systems containing more than one known planet have both
higher orbital angular momentum and total angular momentum compared to those who have
only one planet. This analysis shows that multiplanet systems tend to have higher momenta,
suggesting that the planets in such systems that contribute to the greater portion momenta have
been found. Thus, planetary systems with lower values for the momenta represent the best
candidates to the discovery of new planets |
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