Aligned major axes in a planetary system without tidal evolution: The 61 Virginis example

Richard Greenberg, Christa Van Laerhoven

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Tidal damping of one of the orbits in a planetary system can lead to aligned major axes (the so-called 'fixed-point' condition), but currently aligned major axes do not necessarily imply such a history. An example is the nominal orbital solution for the 61Virginis system where two orbits librate about alignment, but evaluation of the eigenmodes of the secular theory shows it could not be the result of tidal damping but rather of initial conditions. The amplitudes of the eigenmodes suggest that, at most, this system may have undergone some modest degree of tidal damping.

Original languageEnglish (US)
Pages (from-to)429-435
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume419
Issue number1
DOIs
StatePublished - Jan 1 2012

Keywords

  • Celestial mechanics
  • Planets and satellites: dynamical evolution and stability

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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