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Planetary populations according to the orbital angular momentum

Published online by Cambridge University Press:  09 March 2010

João A. S. Amarante  and
Helio J. Rocha-Pinto
João A. S. Amarante
Affiliation:
Universidade Federal do Rio de Janeiro, Observatório do Valongo Lad. do Pedro Antônio 43, 20080-090 Rio de Janeiro RJ, Brazil email: amarante@astro.ufrj.br, helio@astro.ufrj.br
Helio J. Rocha-Pinto
Affiliation:
Universidade Federal do Rio de Janeiro, Observatório do Valongo Lad. do Pedro Antônio 43, 20080-090 Rio de Janeiro RJ, Brazil email: amarante@astro.ufrj.br, helio@astro.ufrj.br
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Abstract

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We investigate the angular momentum distribution of known exoplanetary systems, as a function of the planetary mass, orbital semimajor axis and metallicity of the host star. We find exoplanets seems to be classified according to at least two ‘populations’, with respect to their angular momentum properties. This classification is independent on the composition of the planet and seems to be valid for both jovian and neptunian planets, and probably can be extrapolated to the terrestrial planets of the Solar System. We analyse these ‘populations’ considering the phenomenon of planetary migration.

Keywords

exoplanetsplanetary migration
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 420 - 421
Copyright
Copyright © International Astronomical Union 2010

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