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

Richard Greenberg; Christa Van Laerhoven

doi:10.1111/j.1365-2966.2011.19707.x

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

Richard Greenberg, Christa Van Laerhoven

Planetary Sciences

Research output: Contribution to journal › Article › peer-review

3 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 language	English (US)
Pages (from-to)	429-435
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	419
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2011.19707.x
State	Published - Jan 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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10.1111/j.1365-2966.2011.19707.x

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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.",

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AB - 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.

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

Abstract

Keywords

ASJC Scopus subject areas

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