Classification of exoplanets according to density

Andrzej Odrzywolek, Johann Rafelski

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Considering probability distribution as a function of the average density ρ¯ computed for 424 extrasolar planets, we identify three log-normal Gaussian population components. The two most populous components at ?¯ ≃ 0.7 g/cc and ?¯ ≃ 7 g/cc are the ice/gas giants and iron/rock super-Earths, respectively. A third component at respectively. A third component ? 30 g/cc is consistent with brown dwarfs, i.e., electron degeneracy supported objects. We note presence of several extreme density planetary objects.

Original languageEnglish (US)
Pages (from-to)1917-1922
Number of pages6
JournalActa Physica Polonica B
Issue number11
StatePublished - Nov 2018

ASJC Scopus subject areas

  • General Physics and Astronomy


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