Data analysis on the extrasolar planets using robust clustering

作者：Jiang Ing Guey^*; Yeh Li Chin; Hung Wen Liang; Yang Miin Shen

来源：Monthly Notices of the Royal Astronomical Society, 2006, 370(3): 1379-1392.

DOI：10.1111/j.1365-2966.2006.10580.x

• stellar dynamics
• methods
• data analysis
• planetary systems

We use both the conventional and more recently developed methods of cluster analysis to study the data of extrasolar planets (exoplanets). Using the data set with planetary mass M, orbital period P and orbital eccentricity e, we investigate the possible clustering in the ln M, ln P, ln P-ln M, e and ln P-e spaces. There are two main implications: (1) mass distribution is continuous, and (2) orbital population could be classified into three clusters, which correspond to the exoplanets in the regimes of tidal, ongoing tidal and disc interaction, respectively.

• 出版日期2006-8-11
• 单位清华大学