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On the Period-Mass Functions of Extrasolar Planets

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 نشر من قبل Ing-Guey Jiang
 تاريخ النشر 2009
  مجال البحث فيزياء
والبحث باللغة English
 تأليف Li-Chin Yeh




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Using the period and mass data of two hundred and seventy-nine extrasolar planets, we have constructed a coupled period-mass function through the non-parametric approach. This analytic expression of the coupled period-mass function has been obtained for the first time in this field. Moreover, due to a moderate period-mass correlation, the shapes of mass/period functions vary as a function of period/mass. These results of mass and period functions give way to two important implications: (1) the deficit of massive close-in planets is confirmed, and (2) the more massive planets have larger ranges of possible semi-major axes. These interesting statistical results will provide important clues into the theories of planetary formation.



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