Data Analysis on the Extra-solar Planets Using Robust Clustering
arXiv:astro-ph/0610695 · doi:10.1111/j.1365-2966.2006.10580.x
Abstract
We use both the conventional and more recently developed methods of cluster analysis to study the data of extra-solar planets. 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, on-going tidal and disc interaction, respectively.
published in MNRAS, the results of Cluster Analysis can be taken electronically from the main latex file for further comparisons and studies
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